in 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 -823 18 1 $18 0 40 2 $41 0 62 3 $58 7,008 81 4 $80 6,493 -243 ons 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 if the cost of capital is 5%? 20%? 50%