You are choosing between two projects. The cash flows for the projects are given in the following table? ($ million): Project Year 0 Year 1 Year 2 Year 3 Year 4 A negative $ 51 $ 23 $ 21 $ 22 $15 B negative $100 $18 $41 $52 $61 a. What are the IRRs of the two? projects? b. If your discount rate is 4.8 %?, what are the NPVs of the two projects? c. Why do IRR and NPV rank the two projects differently?