The Nolan Corporation finds it is necessary to determine its marginal cost of capital. Nolan's current capital structure calls for 40 percent debt, 10 percent preferred stock, and 50 percent common equity. Inilially, common equity will be in the form of retained earnings (Ke) and then new common stock (Kn). The costs of the various sources of financing are as follows: debt (after-tax). 7.2 percent, preferred stock, 5 percent; retained eamings, 12 percent; and new common stock, 13.2 percent. B. What is the intial weighted average cost of capital? (Include debt, preferred stock, and common equity in the form of retained earnings, Kt ) Note: Do not round Intermedlate calculations. Input your answers as a percent rounded to 2 decimal places. b. If the firm has $29 million in retained earnings, at what size capital structure will the firm run out of retained earnings? Note: Enter your onswer in millions of dollars (e.9., $10 million should be entered os "10"). c. What will the marginal cost of capital be immediately after that point? (Equity will remain at 50 percent of the capital structure, but will all be in the form of new common stock, Kn.) Note: Do not round Intermedlate calculations. Input your answer os o percent rounded to 2 decimal places. d. The 7.2 percent cost of debt referred to earlier applles only to the first $44 million of debt After that, the cost of debt will be 9.2 percent. At what size capital structure will there be a change in the cost of debr? Note: Enter your onswer in millions of dollars (e.g., $10 million should be entered os "10")