A Market uses a MARR of 10% to evaluate investment alternatives. In comparing challenger option B with an acceptable base alternative A, find IRR_(B -A) > MARR. Evaluated at the MARR, which of the following statements must be true?

A. PW_(B-A) < 0

B. PW_B = PW_A

C. PW_B(10%) < 0

D. Alternative B is preferred to alternative A

E. None of the above