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Question 4 2 points Save Answer An aerospace industry decides to purchase a new advanced machine. The costs of the machines are estimated below, and all machines are estimated to have a 4-year useful life. If the MARR is 20% per year, determine which machine should be purchased on the basis of a rate of return analysis. Machine First Costs Annual Operation Cost, $ 1 -31.000 -16.000 2 -29,000 -19.300 Machine 1 None of the Machines Machine 2 Machines 1 & 2