You manage the following $5 million portfolio that contains stocks A through D. The required rate of return on the market is 7.00% and the risk-free rate is 2.25%. What is the portfolio's required rate of return? Do not round your intermediate calculations. Amount Beta Stock 725,000 1.25 A 275,000 0.75 B 3,500,000 1.15 500,000 0.65 D $5,000,000 a. 10.75% b. 8.49% C. 8.03% d. 11.20% e. 7.44%