A project that a firm considers to be average risk has normal cash flows. Holding all else constant, which of these statements is CORRECT? Oa. As the project's WACC decreases, its IRR will increase. Ob. As the project's WACC decreases, its IRR will decrease. Oc. As the project's WACC decreases, its IRR will change unpredictably. Od. As the project's WACC decreases, its IRR will remain the same