Which of the following statements is correct? Assume that the project being considered has normal cash flows, with one outflow followed by a series of inflows

Question $5$ options:

If a project's NPV is less than zero, then its IRR must be less than the WACC.

If a project's NPV is greater than zero, then its IRR must be less than zero.

The lower the WACC used to calculate it$,$ the lower the calculated NPV will be$.$

The NPV of a relatively low risk project should be found using a relatively high WACC