You have been managing a $5 million portfolio that has a beta of 1.25 and a required rate of return of 12%. The current risk-free rate is 5.25%. Assume that you receive another $500,000. If you invest the money in a stock with a beta of 1.00, what will be the required return on your $5.5 million portfolio? (At least two decimal places are needed for your calculation) A) 13.24% B) 12.24% C) 11.38% D) 12.78% 11.88%