need help

Assume the yield curve is flat and the T-bill rate is 5%. The market return rate is 10%. The required rate of return for Stock A is 9%. An investor is forming a portfolio by investing $50,000 in stock A and $25,000 in stock B. Stock B has a beta of 0.9. What is the required rate of return on the investor's portfolio? Beta Stock TRF Weight Required return IM A 9% B Select one: O a. 12.0% Ob 9.65% O c. 10.15% O d. 9.15% O e. 10.75%