13 3 points Amadeus Company has 40% debt, 10% preferred stock, and 50% common equity. The after-tax cost of debt is 4%, the cost of preferred stock is 7.5%, and the cost of common equity is 11.50%. Which of the following is closest to the firm's Weighted Average Cost of Capital (WACC)? O 7.55 percent 7.73 percent 7.94 percent 8.10 percent 8.50 percent