Which of the Following Statements Is CORRECT

Which of the following statements is CORRECT?

A) the irr method can never be subject to the multiple irr problem, while the mirr method can be.
B) one reason some people prefer the mirr to the regular irr is that the mirr is based on a generally more reasonable reinvestment rate assumption.
C) the higher the cost of capital, the shorter the discounted payback period.
D) the mirr method assumes that cash flows are reinvested at the crossover rate.
E) the mirr and npv decision criteria can never conflict.