8-18 QZY, Inc. is evaluating new widget machines offered by three companies. The chosen machine A will be used for 3 years. Company Company Company A B C First cost $15,000 $25,000 $20,000 Maintenance 1,600 400 900 and operating Annual benefit 8,000 13,000 9,000 Salvage value 3,000 6,000 4,500 (a) Construct a choice table for interest rates from 0% to 100%. (b) MARR = 15%. From which company, if any, should you buy the widget machine? Use rate of return analysis. -19 Andre