There are four principal decision models for evaluating and selecting investment projects: - Net present value (NPV) - Profitability index (PI) - Internal rate of return (IRR) - Payback period (PB) Which method or methods adjust the project's net cash flows (NCFs) to recognize the effects of the magnitude, timing, and riskiness of the project's cash flows? NPV and PI NPV and discounted PB NPV, IRR, P1, and discounted PB IRR and PI Categorize the following statements whether they characterize the IRR, NPV, PB, or PI decision criteria