Mkbk manufacturing inc. is considering buying a cnc machine from one of the following four reconditioned machines. the company will replace the machine at the end of 10 years. all of them are expected to have the same salvage value of 10% of the initial cost at the end of 10 years. marr is 10%. which one of the alternative it should buy? machine initial cost annual profit a 20,000 5,000 b 100,000 16,500 c 70,000 10,000 d 50,000 8,500