2. (15 points) For the alternatives show below, only one can be chosen. The first cost, annual revenue, and salvage value are estimated. If the MARR is 15% per year, determine which alternative should be selected based on a. Present worth analysis. b. Incremental rate of return. Calculate by hand or use spreadsheet. First Cost, $ Maintenance & Operations, $/year Revenue, $/year Salvage Value, $ Life Option A -40,000 -12,000 6,000 20,000 3 Option B -95,000 -5,000 11,000 47,000 6