estion 22 3 points Save A K. Bell Jewelers wishes to maintain a capital structure of 40% debt, 10% preferred stock, and 50% common stock. The cost of financing with retained earnings is 12%, the cost of preferred stock financing is 9%, and the before-tax cost of debt is 6%. Calculate the weighted average cost of capital ( WACC) assuming that the relevant marginal tax rate is 25%. 9.3% a. 8.7% 7.6% C. d. 8.2% 6.9% e