Compare the probable part cost from Machine A and Machine B$,$ assuming that each will make the part to the same specification. Which machine yields the lowest part cost? Assume that the MARR $=10\%$ per year. $(6\mathrm{.}5)$ b$.$ If the cost of labor can be cut in half by using part$-$time employees, which machine should be recommended? $(6\mathrm{.}5)$ Machine A Machine B Initial capital investment $$35,000$ $$150,000$ Life $10$ years $8$ years Market value $$3,500$ $$15,000$ Parts required per year $10,00010,000$ Labor cost per hour $$16$ $$20$ Time to make one part $20$ minutes $10$ minutes Maintenance cost per year $$1,000$ $$3,000$