a.Plot the data and provide insights about the time series. Thecorrect graph is?b. what is the forcast for week 16, using a two-period movingaverage? Round your answer to the nearest cent.c. what A restaurant wants to forecast its weekly sales. Historical data (in dollars) for fifteen weeks are shown below. Use Ercel and the Moving Average template to answer the following questions.b. What i 2 answers