Refi Corporation is planning to repurchase part of its common stock by issuing corporate debt. As a result, the firm's debt-equity ratio is expected to rise from 40 percent to 50 percent. The firm currently has $4.1 million worth of debt outstanding. The cost of this debt is 7 percent per year. The firm expects to have an EBIT of $1.4 million per year in perpetuity and pays no taxes. a. What is the market value of the firm before and after the repurchase announcement? (Do not round intermediate calculations and enter your answers in dollars, not millions of dollars, rounded to the nearest whole number, e.g., 1,234,567.) b. What is the expected return on the firm's equity before the announcement of the stock repurchase plan? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) c. What is the expected return on the equity of an otherwise identical all-equity firm? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) d. What is the expected return on the firm's equity after the announcement of the stock repurchase plan? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)