1 abus Incorrect Question 3 0 / 5 pts Assume the yield curve is flat and the T-bill rate is 4%. The market return rate is 15%. The required rate of return for Stock A is 11.3%. An investor is forming a portfolio by investing $50,000 in stock A and $30,000 in stock B. Stock B has a beta of 0.90. What is the required rate of return on the investor's portfolio? Stock Required return TRF Beta A 11.3% B 12.28% 10.00% 6.8% ources burces 10.70% 10.15% MacBook Pro