Project X has an internal rate of return of 20 percent.  Project Y has an internal rate of return of 15 percent.  Both projects have a positive net present valuE.  Which of the following statements is most correct? ( ) A. Project X must have a higher net present value than Project Y. B. If the two projects have the same WACC, Project X must have a higher net present value. C. Project X must have a shorter payback than Project Y. D. Statements b and c are correct. E. None of the statements above is correct.