Lynne Chappell manages the inventory of supplies in a large hospital. To determine which items should be closely monitored, Lynne decided to use the ABC classification scheme to group the items on the basis of their value. As the following table shows, she took a random sample of 20 items and recorded the annual usage and unit cost of each. How should each item be classified?

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Unit Cost (in U.S. dollars) Unit Cost (in U.S. dollars) Inventory Item Annual Inventory Item Annual Usage Usage P21 800 80 R82 20 80 A12 400 70 G65 80 70 L71 220 200 K43 50 100 S54 60 90 M94 70 80 C25 50 130 V45 15 60 D76 30 170 T62 30 180 E27 20 200 117 20 80 F38 300 90 W22 300 90 Н19 520 120 037 700 85 Q10 10 100 N88 100