Lumber Corp's common stock trades at a price of $45.9 per share. The most recent dividend was $1.16 per share and it is expected to grow by 4% per year. Flotation costs for common stock have been estimated at 5%, while bonds and preferred stock are sold in private placements and have negligible flotation costs. The company's preferred stock is selling at $88.15 and has an annual dividend of $4 Lumber Corp. has bonds outstanding with an average coupon rate of 12% and an average yield to maturity of 7%. The firm's optimum capital structure is 50% equity, 10% preferred stock and 40% debt, and its tax rate is 32%. Pert 10 A Attempt 1/3 for 10pts. What is the (after-tax) cost of debt? What is the cost of preferred stock? What is the cost of retained earnings? What is the cost of new common stock? Attempt 1/3 for 10 pts. Part 5 B Attempt 1/3 for 10 pts. What is the weighted average cost of capital, assuming the company doesn't have to issue any new common stock