Example: Present Worth Analysis of Equal-Life Alternatives For the following Mutually Exclusive alternatives, which alternative should be selected based upon a present worth analysis? A1 A2 A3 Electric Power Gas Power Solor Power First Cost: -2500 First Cost: -3500 First Cost: -6000 Annual Operating Cost: -900||Annual Operating Cost: -700|| Annual Operating Cost: -50 Salvage Value: +200 Salvage Value: +350 Salvage Value: +100 Life: 5 years Life: 5 years Life: 5 years Assume i = 10% per year