9. Payback and NPV. Here are the expected cash flows for three projects: (L LO8-4) a. What is the payback period on each of the projects? b. If you use the payback rule with a cutoff period of two years, which projects will you accept? c. If you use a cutoff period of three years, which projects will you accept? d. If the opportunity cost of capital is 10%, which projects have positive NPVs? e. "Payback gives too much weight to cash flows that occur after the cutoff date." True or false