A firm's target capital structure is 45% debt, 10% preferred stock, and 45% common stock. The YTM on the debt is 6.50%, the required return on the preferred is 8.00%, the required return on common stock is 11.25%, and the tax rate is 40%. What is the firm's WACC? 7.95% 8.79% 7.62% 9,43% 6.99%