2. A firm is considering an investment in a numerical controlled milling machine needed for a ten (10) year project life. Three alternatives are under consideration. The firm uses an 18% MARR. The cash flows of the alternatives are as follows: C Cash Flow Initial cost $21,500 O & M costs / year $ 2,650 Annual cost savings $ 9,000 Salvage value $ 6,225 Technical life years 10 . $19,200 $ 2,650 $ 9,000 $ 6,125 $23,250 $ 1,300 $ 8,000 $ 7,900 10 5 Using incremental rate of return analysis, determine which alternative the firm should select