You were hired as a consultant to Quigley Company, whose target capital structure is 20% debt, 10% preferred, and 7o% common equity. The interest rate on new debt is 8.00%, the yield on the preferred is 6.00%, the cost of retained earnings is 11.00%, 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. 7.43% b. 9.50%6 C. 7.67% d. 8.90% e. 9.90% 0=I lcon KCo