9) Which of the following statements are CORRECT concerning the WACC? (1 point) I. The interest payments on debt are usually reduced by a tax break II. The first step on the WACC's calculation is to calculate the after-tax return on the debt. III. If the WACC is 13% and the project profitability is 11%, there is a firm's value creation IV. The market determines the WACC. a. All statements are incorrect. b. Only I and II are correct. c. Only I and IV are correct. d. Only I, II and III are correct