Which of the following statements is incorrect?

Select one:

a. Other things equal, the MIRR of a project increases when the WACC decreases.

b. Other things equal, the payback period of a project remains the same when the WACC decreases.

c. Other things equal, the NPV of a project increases when the WACC decreases.

d. Other things equal, the discounted payback period of a project decreases when the WACC decreases.

e. Other things equal, the IRR of a project increases when the WACC decreases.