Question 11 (1 point) Which of the following statements about the cost of capital is CORRECT? OA) An increase in the risk-free rate will normally lower the marginal costs of both debt and equity financing. B) A change in a company's target capital structure cannot affect its WACC. OC) If a company's tax rate increases, then, all else equal, its weighted average cost of capital will decrease. D) WACC calculations should be based on the before-tax costs of all the individual capital components