1 pts Question 3 Our backtest loop has a line "portfolio value - portfolio value.append(holding period positions.sum('columns)" What does this line do? You need to select all correct statements: right before the program reaches the the line abovdsportfolio value is a pandas series that contains all portfolio values until (and including the current start date right before the program reaches the the line above, portfolio_value is a pandas series that contains all portfolio values until (and including the current end date holding period positions, sumcolumns) contains the total portfolio values for the current holding period night after the program reaches the the line above, portfolio value is a pandas series that contains all portfolio values until (and including the current start date right after the program reaches the the line above, portfolio value is a pandas sanes that contains all portfolio values until (and including the current end date during the first holding period oright before the propeaches the the lind above portfolio_value is a cmpty pandas series series of lenet You need to select all correct statemer right before the program reaches the the line above, portfolio_value is a pandas series that contains all portfolio values until (and including) the current start_date right before the program reaches the the line above, portfolio_value is a pandas series that contains all portfolio values until (and including) the current end_date holding period_positions.sum('columns) contains the total portfolio values for the current holding period I right after the program reaches the the line above, portfolio value is a pandas series that contains all portfolio values until (and including) thg current start date right after the program reaches the the line above, portfolio value is a pandas series that contains all portfolio values until (and including the current end date during the first holding period (1-0), right before the program reaches the the line above, portfolio value is a empty pandas series (series of length 0) during the first holding period (-0.right before the program reaches the the line above portfolio value is a pandas series that contains a single value (series of length 1) 1 pts Question 3 Our backtest loop has a line "portfolio value - portfolio value.append(holding period positions.sum('columns)" What does this line do? You need to select all correct statements: right before the program reaches the the line abovdsportfolio value is a pandas series that contains all portfolio values until (and including the current start date right before the program reaches the the line above, portfolio_value is a pandas series that contains all portfolio values until (and including the current end date holding period positions, sumcolumns) contains the total portfolio values for the current holding period night after the program reaches the the line above, portfolio value is a pandas series that contains all portfolio values until (and including the current start date right after the program reaches the the line above, portfolio value is a pandas sanes that contains all portfolio values until (and including the current end date during the first holding period oright before the propeaches the the lind above portfolio_value is a cmpty pandas series series of lenet You need to select all correct statemer right before the program reaches the the line above, portfolio_value is a pandas series that contains all portfolio values until (and including) the current start_date right before the program reaches the the line above, portfolio_value is a pandas series that contains all portfolio values until (and including) the current end_date holding period_positions.sum('columns) contains the total portfolio values for the current holding period I right after the program reaches the the line above, portfolio value is a pandas series that contains all portfolio values until (and including) thg current start date right after the program reaches the the line above, portfolio value is a pandas series that contains all portfolio values until (and including the current end date during the first holding period (1-0), right before the program reaches the the line above, portfolio value is a empty pandas series (series of length 0) during the first holding period (-0.right before the program reaches the the line above portfolio value is a pandas series that contains a single value (series of length 1)