A manager must decide which type of machine to buy A,B, or C. MACHINE A B C COST $40,000 $30,000 $80,000 ct forecasts and processing times on the machine are as follows: PROCESSING TIME PER UNIT (MIN) RODUCT ANNUAL A B DEMAND 1 16,000 3 4 2 2 12,000 4 4 3 3 6,000 5 6 4 4 30,000 2 2 1 a. Assume that only purchasing costs are being considered. Which machine would have the lowest total cost, and how many of that machine would be needed? Machines operate 10 hours a day, 250 days a year.