(Solving a comprehensive problem) Use the end-of-year stock price data in the popup window, , to answer the following questions for the Harris and Pinwheel companies. a. Compute the annual rates of return for each time period and for both firms. c. Compute a three-year rate of return spanning the entire period (i.e., using the ending price for period 1 and ending price for period 4 ). d. Since the rate of return calculated in part c is a three-year rate of return, convert it to an annual rate of return by using the following equation: a. Enter the annual rate of return for each year for Harris in the table below. (Round to two decimal places.)