An engineer at Anode Metals is considering the projects below, all of which can be considered to last indefinitely. If the company's MARR is 14% per year, determine which two alternatives should be selected based on incremental rate of return analysis? Machine First Cost, $ Annual Income, S/yr Alternative's Rate of Return. % -20,000 3,000 15 -10,000 2,000 20 3 -15,000 2,800 18.7 4 -70,000 10,000 14.3 5 -50,000 6.000 12