Mullineaux Corporation has a target capital structure of 65 percent common stock, 10 percent preferred stock, and 25 percent debt. Its cost of equity is 11 percent, the cost of preferred stock is 6 percent, and the pretax cost of debt is 8 percent. The relevant tax rate is 34 percent. a. What is Mullineaux's WACC? (Round your answer to 2 decimal places. (e.g., 32.16)) WACC b. What is the aftertax cost of debt? (Round your answer to 2 decimal places. (e.g., 3216) Cost of debt