Yummy Pizza Company that has a capital structure of 60% equity, 30% debt, and 10% preferred stock. It has a cost of equity of 14%, an after-tax cost of debt of 4%, a cost of preferred stock of 8%, and a tax rate of 30%. What is the WACC of Yummy Pizza?

a. 8.67%

b. 14%

c. 10.4%

d. 11%