31, You manage a risky portfolio P with expected return of 18% and standard deviation of 28%. The T-bill rate is 8 %. Suppose your risky portfolio includes the following investments in the given proportions Stock A 25% Stock B Stock C 43% 32% a. (4 points) Suppose that your client decides to invest in your risky portfolio P a proportion y the total investment budget so that the overall portfolio will have an expected return of 16% What is the proportion y and what is the standard deviation of your client portfolio