please help

Three alteratives are given below Use a MARR = 15% Ateratives #1 Initial Cost: $25,000 Life: 10 years Cash flow +$5000 for year 1 through 10 #2 Initial Cost $15,000 Life 10 years Cash flow $3100 for year 1 through 10 #3 Indial Cost $22.000 Life: 10 years Cash flow +$4500 for year 1 through 10 16. Which IRRs, if any, do not meet the minimum MARR? 17. Using incremental IRR analysis, which alternative is the best choice