You were hired as a consultant to Quigley Company, whose target capital structure is 35% debt, 10% preferred, and 55% common equity. The interest rate on new debt is 7.00%, the yield on the preferred is 6.00%, the cost of retained earnings is 13.25%, and the tax rate is 25%. The firm will not be issuing any new stock. What is Quigley's WACC? Round final answer to two decimal places. Do not round your intermediate calculations. a. 10.34% b. 9.13% c. 9.73% d. 8.17% e. 7.75%