Question 13 (1 point) If the calculated NPV for a project is negative, then which of the following is most accurate? O a. The discount rate used is less than the firm's WACC [Weighted Average Cost of Capital] b. The discount rate used is greater than the firm's WACC [Weighted Average Cost of Capital]. C. The discount rate used is less than the internal rate of return. O d. The discount rate used is greater than the internal rate of return