4. Note the following information on two mutually exclusive projects under consideration by PPP Company. (14 pts) Annual Cash Flows Year 0 1 2 3 4 G $60,000 8,500 10,000 9,750 15,000 $45,000 18,250 18,250 18.250 18,250 PPP requires a 16 percent rate of return on projects of this nature. a. Compute the NPV of both projects. b. Compute the profitability index of both projects. c. Compute the payback period on both projects. d. Which of the two projects, if either, should PPP accept? Why