2 questions please

Projects S and L are equally risky, mutually exclusive, and have normal cash flows. Project S has an IRR of 15%, while Project L's IRR is 12%. The two projects have the same NPV when the WACC is 7% Which of the following statements is CORRECT? Select one: e a. If the WACC is 10%, both projects will have a negative NPV b. If the WACC is 10%, both projects will have positive NPVS c. If the WACC is 13%, Project S will have the lower NPV d. If the WACC is 6%, Project S will have the higher NPV Which of the following statements is TRUE? Select one: a. When the NPV of a project is 0, the IRR of the project is equal to the project cost of capital b. A firm should accept all independent projects whose IRR > 0 c. A firm should accept all mutually exclusive projects whose NPV > 0