Consider Projects S and L

Consider projects S and L.Both have normal cash flows, and the projects have the same risk, hence both are evaluated with the same WACC, 10%.However, S has a higher IRR than L.Which of the following statements is CORRECT?

A) If Project S has a positive NPV, Project L must also have a positive NPV.
B) If the WACC falls, each project's IRR will increase.
C) If the WACC increases, each project's IRR will decrease.
D) If Projects S and L have the same NPV at the current WACC, 10%, then Project L, the one with the lower IRR, would have a higher NPV if the WACC used to evaluate the projects declined.
E) Project S must have a higher NPV than Project L.