I need help with part C)

There are two stocks in the market, stock A and stock B. The price of stock A today is $76. The price of stock A next year will be $64 if the economy is in a recession, $84 if the economy is normal, and $96 if the economy is expanding. The probabilities of recession, normal times, and expansion are 0.2, 0.6, and 0.2, respectively. Stock A pays no dividends and has a beta of 0.79. Stock B has an expected return of 13%, a standard deviation of 34%, a beta of 0.56, and a correlation with stock A of 0.48. The market portfolio has a standard deviation of 14%. Assume the CAPM holds. a. What are the expected return and standard deviation of stock A? (Do not round intermediate calculations. Round the final answers to 2 decimal places.) Stock A 8.42] % Expected return Standard deviation 13.55 % b. If you are a typical, risk-averse investor with a well-diversified portfolio, which stock would you prefer? Stock A Stock B c. What are the expected return and standard deviation of a portfolio consisting of 55% of stock A and 45% of stock B? (Do not round intermediate calculations. Round the final answers to 2 decimal places.) % Expected return Standard deviation % d. What is the beta of the portfolio in (c)? (Do not round intermediate calculations. Round the final answer to 3 decimal places.) Beta of the portfolio