Please Help with this question, especially part B!! I will like your response!

A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a rate of 4.2%. The probability distribution of the risky funds is as follows:

The correlation between the fund returns is 0.11. a. Solve numerically for the proportions of each asset and for the expected return and standard deviation of the optimal risky portfolio. b. What is the Sharpe ratio of the best feasible CAL?

Expected Return Standard Deviation Stock fund (S) Bond fund (B) 12% 5 33% 26