A. Calculate the portfolio beta on the basis of the original cost figures. b. Calculate the percentage return of each asset in the portfolio for the year. c. Calculate the percentage return of the portfolio on the basis of original cost, using income and gains during the year. d. At the time Jamie made his investments, investors were estimating that the market return for the coming year would be 9 %. The estimate of the risk-free rate of return averaged 3 % for the coming year. Calculate an expected rate of return for each stock on the basis of its beta and the expectations of market and risk-free returns.