You were hired as a consultant to Quigley Company, whose target capital structure is 30% debt, 20% preferred, and 50% common equity.The interest rate on new debt is 7.50%, the yield on the preferred is 6.20%, the cost of retained earnings is 13.25%, and the tax rate is 40%.The firm will not be issuing any new stock.What is Quigley's WACC?