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Economics . Your Team wish to evaluate four independent projects that all have a 10-year life at MARR = 20% per year. Preliminary estimates for first cost, annual net income, and Salvage Value have been made. A B C D First cost, $ -1,200 -2,000 -5.000 -7.000 Annual net 200 400 1100 1300 income, $/year Salvage value, $ 5 6 8 (a) Accept or reject each project using a present worth analysis. On your spreadsheet, include the logical IF function to make the accept/ reject decision. (b) The preliminary estimates have changed for projects A and B as shown below. Use the same spreadsheet to reevaluate them. A B First cost, $ -1,000 -2,200 Annual net income, $/year 300 440 Salvage value, $ 8 0