The difference between the present value of fluture after$-$tax cash inflows and the present value of future cash outflows of an investment project is the:

Multiple Choice

Internal rate of return $($iPS$)$ of the propect.

Modified internal rate of return $($MRP$)$ on the project.

Nat present value $($NPV$)$ of the project.

Modified internal rate of return MRR$)$ of the project.

Book $($accourting$)$ rate of recom for the project.