Use the following information to answer the fo Current market value balance sheet for firm X. Assets $146,000 Debt Preferred Stock $29,200 Common Stock $73,000 $43,800 before-tax cost of debt is 6.5 percent, the cost of preferred The stock is 7.75 percent, the cost of common stock is 9 percent, and firm B's marginal tax rate is 34%. Assume that the current balance sheet reflects target weights of sources of capital 40. What is firm B's weighted average cost of capital? a. 5.48% b. 6.38% C. 7.34% d. 8.17%