Calculate the required rate of return for the Wagner Assets Management Group, which holds 4 stocks. The market's required rate of return is 17.0%, the risk-free rate is 7.0%, and the Fund's assets are as follows: Stock Investment Beta A $200,000 1.50 B 300,000 0.50 C 500,000 1.25 D 1,000,000 0.75 Select the correct answer. a. 14.54% b. 14.63% c. 14.36% d. 14.27% e. 14.45%