Retained earnings don't pay interest or dividends, but investors still expect to earn a return on the earnings that the firm reinvests on their behalf. Use the following information to estimate an investor's required rate of return. Risk free rate = 3.00% Beta = 1.500 Market rate 11.00% Today's price = $20.00 Growth 6.00% Anticipated dividend = $1.50 Borrowing rate = 7.50% Tax rate 25.00% Select one: O a. 15.00% % Ob 12.50% Oc. 16.50% O d. 19.50%