When evaluating a single project, the net present value $($NPV$)$ and internal rate of return $($IRR$)$ decision rules will give the same result if Blank$\_\_\_\_\_\_.$

Multiple choice question.

the NPV of the project is equal to its IRR

the NPV of the project increases smoothly as the discount rate increases

the NPV of the project is equal to zero

the NPV of the project declines smoothly as the discount rate increases