4. Based on the information provided in the following table, please answer the questions given below. Po Stock A $70 200 $72 200 $36 400 Stock B $85 500 S81 500 s81 500 Stock c ls05 300 ls98 300 ls98 300 Based on a value-weighted index constructed using the information provided above, what is the rate of return a. or percentage change in the index for the first period (t-0 to t- 1)? (5 Points) b. Would the change be necessarily the same if you were to use an equally-weighted index instead of a value weighted index? Explain. (2 Points)