Please help me solve for A,B and C. Thank you!

Project A B Year 0 - $48 - $98 Year 1 $23 $20 Year 2 $20 $42 Year 3 $22 $50 Year 4 $15 $61 You are choosing between two projects. The cash flows for the projects are given in the following table ($ million): a. What are the IRRs of the two projects? b. If your discount rate is 4.7%, what are the NPVs of the two projects? c. Why do IRR and NPV rank the two projects differently