Only one of three different machines is to be purchased for a certain production process. An engineer performed the following analyses to select the best machine. All machines are assumed to have a 10-year life. Which machine, if any, should the company select if its MARR is 15% per year? (Use ROR approach) 1 2 3 -44.000 -60.000 -72.000 Initial cost, $ Annual cost, $/year Annual savings, $/year -68.000 -70.000 -61.000 80.000 80.000 80.000