I know section B is right, I just need someone to double-check my work for sections A & C

Assume that you manage a risky portfolio with an expected rate of return of 17% and a standard deviation of 36%. The T-bill rate is 4.5%. Your risky portfolio includes the following investments in the given proportions: Stock A Stock B Stock C 20% 38 42 Your client decides to invest in your risky portfolio a proportion () of his total investment budget with the remainder in a T-bill money market fund so that his overall portfolio will have an expected rate of return of 16%. a. What is the proportion y? (Round your answer to 1 decimal places.) Proportion y 69.4 % b. What are your client's investment proportions in your three stocks and in T-bills? (Round your intermediate calculations and final answers to 2 decimal places.) Security T-Bills Investment Proportions 8.00% 18.40 % 34.96 % Stock A Stock B Stock C 38.64 % c. What is the standard deviation of the rate of return on your client's portfolio? (Round your intermediate calculations and final answer to 1 decimal places.) Standard deviation 24.9 % per year Assume that you manage a risky portfolio with an expected rate of return of 17% and a standard deviation of 36%. The T-bill rate is 4.5%. Your risky portfolio includes the following investments in the given proportions: Stock A Stock B Stock C 20% 38 42 Your client decides to invest in your risky portfolio a proportion () of his total investment budget with the remainder in a T-bill money market fund so that his overall portfolio will have an expected rate of return of 16%. a. What is the proportion y? (Round your answer to 1 decimal places.) Proportion y 69.4 % b. What are your client's investment proportions in your three stocks and in T-bills? (Round your intermediate calculations and final answers to 2 decimal places.) Security T-Bills Investment Proportions 8.00% 18.40 % 34.96 % Stock A Stock B Stock C 38.64 % c. What is the standard deviation of the rate of return on your client's portfolio? (Round your intermediate calculations and final answer to 1 decimal places.) Standard deviation 24.9 % per year