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Referring to the following estimates for three mutually exclusive alternatives. The MARR is 6% per year. The annual worth of vendor 2 cash flow estimates is closest to: Vendor 1 Vendor 2 Vendor 3 200,000 First cost, S 550.000 1.000.000 Annual cost, 50.000 20.000 10.000 S per year Revenue, 120,000 120,000 110,000 S per year Salvage value, S 500,000 Life, years 10 15 Select one: a. $43,370 b. $63,370 c. 43,370 d. $67,000