Company has no debt. It has $40 million in common stock outstanding and $10 million in preferred stock. Its corporate tax rate is 30%. Its common stockholders expect a return of 17%. Its preferred stockholders expect a return of 12%. What is Company's weighted average cost of capital?

A. 16%

B. 11.92%

C. 15.28%

D. 17%

E. None of the above