Bargeron Corporation has a target capital structure of 63 percent common stock, 8 percent preferred stock, and 29 percent debt. Its cost of equity is 14.3 percent, the cost of preferred stock is 7.3 percent, and the pretax cost of debt is 9 percent. The relevant tax rate is 38 percent. a. What is the companys WACC? What is the aftertax cost of debt