GreenCo packing company, one of Boeing's suppliers, has a packing machine, with a special valve that is normally replaced every 3 weeks when the machine is idle. As a result, they use 16 valves per year. They estimated that the cost of a failed valve is $1000. The purchase price and quality for 3 suppliers are as follows: Price per valve % Good Supplier A $40 96% Supplier B $50 97.5% a. Calculate the total cost to purchase valves for each supplier. Supplier C $65 98.8%