( You were hired as a consultant to Giambono Company, whose target capital structure is 40% debt, 15% preferred, and 45% common equity. The after-tax cost of debt is 6.00% the cost of preferred is 7.50%, and the cost of retained earnings is 15.75%. The firm will not be issuing any new stock. What is its WACC? 11.89% 10.61% 8.38% 11.9996 8.60% 6,67 p