Please answer A, B, C with excel thank you!

You are choosing between two projects. The cash flows for the projects are given in the following table (5 million) Project Year 0 Year 1 Year 2 - $50 $23 -$102 $20 $40 Year 3 Year $18 $19 $59 a. What are the IRRs of the two projects? b. If your discount rate is 5.2%, what are the NPVs of the two projects? c. Why do IRR and NPV rank the two projects differently