Stocks A and B have the following historical retums: a. Calculate the average rate of return for each stock during the period 2016 through 2020. Round your answers to two decimal places. Stock A: Stock b: b. Assume that someone held a portfolio consisting of 50% of 5 tock A and 50% of 5 tock B. What would the realized rate of return on the portfolo have been each year Round your answers to two decimal places. Negative values should be indicated by a minus 5 ign. What would the average retum on the portfolio have been during this period? Round your answer to two decimal places. c. Calculate the standerd deviation of returns for each stock and for the portfolio. Round your answers to two decimal places. d. Calculate the coefficlent of variation for each stock and for the portfolio. Round your answers to two decimal places. e. Assuming you are a risk-averse investor, would you prefer to hold Stock A, Stock B, or the portfolio