You have 3 projects with the following cash flows: (Click on the following icon in order to copy its contents into a spreadsheet.) a. For which of these projects is the IRR rule reliable? b. Estimate the IRR for oach profoct (to the noarest 1\%). c. What is the NPV of each project if the cost of capital is 5%?20%750% ? The IRR rule is relable for project 1 . Unless all of the negative cash nows of the project procede the positive ories the IRR rule may give the wrong answer and should not be used Furthermore there may be multiple IRRs or the IRR may not exist. b. Estmate the IRR for each project (to the nearest 1% is) The IRR for profect 1 is \%. Round to ihe nearestinlegec)