The target capital structure of your company is 50% common stock, 35% debt, and 15% preferred stock. The cost of common equity is 16%, the before-tax cost of debt is 10%, and the cost of preferred stock is 8%. your firm is in the 35% tax bracket. which of the following is closest to your company's WACC? a. 8.2%, b 10.1%, c 11.5%, d 12.7%