You manage a risky portfolio with an expected rate of return of $17\%$ and a standard deviation of $38\%.$ The T$-$bill rate is $6\%.$ Your client chooses to invest $85\%$ of a portfolio in your fund and $15\%$ in a T$-$bill money market fund.

Suppose that your risky portfolio includes the following investments in the given proportions:

$\backslash$table$[[$Stock A$,31\%$