Question 5 2 pts You estimate that your pre-tax cost of debt is 10%. The firm is paying 25% in taxes. The component cost for preferred stock is 20% and the cost of common equity is 25%. Assume that your target capital structure is comprised of 40% debt, 20% preferred stock, and 40% common stock. What is the firm's WACC? 17.00% 15.78% 19.65% 21.50%