$9.$ Chapter MC$,$ Section $\mathrm{.}10,$ Problem $042$ Which of the following statements is CORRECT? a$.$ The NPV method assumes that cash flows will be reinvested at the cost of capital, while the IRR method assumes reinvestment at the IRR. b$.$ The NPV method assumes that cash flows will be reinvested at the risk$-$free rate, while the IRR method assumes reinvestment at the IRR. c$.$ The NPV method does not consider all relevant cash flows, particularly cash flows beyond the payback period. d$.$ The IRR method does not consider all relevant cash flows, particularly cash flows beyond the payback period. e$.$ The NPV method assumes that cash flows will be reinvested at the cost of capital, while the IRR method assumes reinvestment at the riskfree rate.