You have 3 projects with the following cash flows: (Click on the following icon in order to copy its contents into a spreadsheet.) Year Project 1 Project 2 Project 3 0 -$150 - 824 1 $19 0 38 2 $42 0 62 3 $58 7,007 B0 4 $81 -5.495 -246 21 a. For which of these projects is the IRR rule reliable? b. Estimate the IRR for each project to the nearest 1%) c. What is the NPV of each project the cost of capital is 5% 20% 50%