HBM, Inc has the following capital structure: Assets $600,000 Debt $ 150,000 Preferred stock 30,000 Common stock 420,000 The common stock is currently selling for $18 a share, pays a cash dividend of $0.95 per share, and is growing annually at 7 percent. The preferred stock pays a $10 cash dividend and currently sells for $86 a share. The debt pays interest of 7.0 percent annually, and the firm is in the 30 percent marginal tax bracket. a. What is the after-tax cost of debt? Round your answer to two decimal places. % b. What is the cost of preferred stock? Round your answer to two decimal places. % c. What is the cost of common stock? Assume that the current $0.95 dividend grows by 7 percent during the year. Round your answer to two decimal places. % d. What is the firm's weighted average cost of capital? Round your answer to two decimal places. %