Stock A has a correlation with the market of 0.40 and a standard deviation of 20%, and stock B has a correlation with the market of 0.75 and a standard deviation of 25%. The market has an expected return of 12% and a standard deviation of 18% and the risk- free rate is 3%. (a) Calculate the beta and expected return for stock A and also for stock B, according to the CAPM. (b) Using the expected returns calculated in the prior question, calculate the expected return of a portfolio consisting of 20% stock A and 80% stock B. (c) Calculate the beta of the portfolio (again, 20% stock A and 80% stock B). (d) Using the portfolio beta, calculate the expected rate of return of the portfolio according to the CAPM, and compare this to your answer to part (b)