Baron 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 pretax cost of debt is 6%. The relevant tax rate is 23%.

a. What is the company's WACC? (Provide answer as a percent rounded to 2 decimals, e.g., 25.36%)

b. What is the after tax cost of debt? (Provide answer as a percent rounded to 2 decimals, e.g., 25.36%)