Luther Industries has 25 million shares outstanding trading at $18 per share. In addition, Luther has $150 million in outstanding debt. Suppose Luther's equity cost of capital is 13%, its debt cost of capital is 7%, and the corporate tax rate is 40%. Luther's target capital structure is the same as indicated by current market conditions.
Luther's weighted average cost of capital is closest to:
A) 11.5%
B) 10.8%
C) 9.8%
D) 13.0%