1. Consider the following projects: Cash Flow ($) Project CO C1 C2 C3C4C5 0 0 0 -2,000 1,000 1,000 4,000 1,000 1,000 A 1,000 1,0000 C -3,000 1,000 1,000 01,000 1,000 a) If the opportunity cost of capital is 9 percent, which projects have a positive NPV? b) Calculate the payback period for each project. c) Which project(s) would a firm using the payback rule accept if the cutoff period is four years