Manitoba's Miraculous Resorts Has a Current Capital Structure That Is

Manitoba's Miraculous Resorts has a current capital structure that is 50% equity, 40% debt, and 10% preferred stock. This is considered optimal. Manitoba's Miraculous Resorts is considering a $40 million capital budgeting project. Manitoba Miraculous Resorts has estimated the following:
After-tax cost of debt: 8.5%
Cost of preferred stock: 9.5%
Cost of internal equity: 14.0%
If all equity comes from internal sources, what should Manitoba's cost of capital be for this project?

A) 10.67%
B) 11.35%
C) 9.45%
D) 12.15%