Which of the following statements regarding the Net Present Value (NPV) is incorrect?

A. If a projects NPV is positive, its IRR is also positive.

B. NPV is the PV sum of all (positive and negative) cash flows from the project.

C. If the NPV is positive, the project is acceptable.

D. If a projects NPV is zero, its IRR is the same as the appropriate cost of capital for the project.