Which of the following statements is CORRECT? 1) The NPV method assumes that cash flows will be reinvested at the required return, while the IRR method assumes reinvestment at the IRR. 2) The MIRR method assumes that cash flows will be reinvested at the risk-free rate, while the IRR method assumes reinvestment at the IRR. 3) The NPV method assumes that cash flows will be reinvested at the required return, while the IRR method assumes reinvestment at the risk-free rate. 4) The NPV method does not consider all relevant cash flows, particularly, cash flows beyond the payback period. 5) The MIRR method cannot be applied to "unconventional" cash flows