Using the WACC in practice: Ronnie's Comics has found that its cost of common equity capital is 15 percent and its cost of debt capital is 12 percent. If the firm is financed with $250,000,000 of common shares (market value) and $750,000,000 of debt, then what is the after-tax weighted average cost of capital for Ronnie's if it is subject to a 35 percent marginal tax rate?
A) 6.05%
B) 9.6%
C) 8.75%
D) 13.65%