Peacock Corporation has a target capital structure of 70% common stock, 5% preferred stock, and 25% debt. Its cost of equity is 11%, the cost of preferred stock is 5%, and the cost of debt is 7%. The relevant tax rate is 35%. a. What is the companys WACC? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places.) WACC % b. What is the after-tax cost of debt? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places.) After-tax cost of debt %