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Correct Answer: C
Weight of debt in the firm’s capital structure = 7/ (7 + 2 + 12) = 33.3%
Weight of preferred stock in the firm’s capital structure = 2/ (7 + 2 + 12) = 9.5%
Weight of common stock in the firm’s capital structure = 12/ (7 + 2 + 12) = 57.1%
After-tax cost of debt = 8*(1-0.35) = 5.2%
WACC = (weight of debt*cost of debt) (weight of preferred stock*cost of preferred stock) (weight of equity*cost of equity) = 0.333*0.052 + 0.095*0.09 + 0.571*0.12 = 9.5%