HBM, Inc has the following capital structure: Assets $600,000 Debt $240,000 Preferred stock 60,000 Common stock 300,000 The common stock is currently selling for $13 a share, pays a cash dividend of $0.80 per share, and is growing annually at 7 percent. The preferred stock pays a $9 cash dividend and currently sells for $85 a share. The debt pays interest of 7.5 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 $0.80 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. %