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 12.00%. The firm will not be issuing any new stock. What is its WACC? 8.93% (B) 6.69% (C) 7.59% (D) 7.68% (E) 6.96%