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 sure rate of 5.5%. The probability distributions of the risky funds are: Expected Return Standard Deviation Stock fund (S) 15 % 32 % Bond fund (B) 9 % 23 % The correlation between the fund returns is 0.15. Suppose now that your portfolio must yield an expected return of 12% and be efficient, that is, on the best feasible CAL. b-1. What is the proportion invested in the T-bill fund? What is the proportion invested in each of the two risky funds?