please solve this with steps and if you can add some notes

In order to improve the recovery of highly brackish groundwater, the engineer at Clean Water Engineering has established three alternatives for this project. Assess all of the following projects, using MARR of 10% per year. Alternative A 300,000 First Cost, $ Alternative B 250,000 130,000 in first Alternative C 125,000 65,000 in first 95,000 starting year and year and Annual operating cost, $ 1 year 2 decreases by $2000 thereafter 220,000 increases by 10% thereafter Annual income, $ 175,000 190,000 Salvage, $ 70,000 40,000 20,000 oo Life, Year 15 12 a) Using Annual worth analysis, which alternative would you recommends the engineer to select? b) Would you use Present worth analysis to determine your answer? And why? 1.6