Williamson, Inc., has a debt-equity ratio of 2.41. The company's weighted average cost of capital is 9 percent, and its pretax cost of debt is 7 percent. The corporate tax rate is 40 percent a. What is the company's cost of equity capital? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Cost of equity capital b. What is the company's unlevered cost of equity capital? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Unlevered cost of equity c. What would the company's weighted average cost of capital be if the company's debt-equity ratio were .75 and 1.90? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Weighted average cost of capital Debt-equity ratio = .75 Debt-equity ratio = 1.90