Mullineaux Corporation has a target capital structure of 50 percent stock and 50 percent debt. Its cost of equity is 18.8 percent, and its after-tax cost of debt is 7.8 percent. What is the companys WACC if its tax rate is 21 percent? Group of answer choices 13.30 percent 11.45 percent 12.05 percent 12.89 percent 13.80 percent