Learning about ABC. Cannot figure out what the differences are in the required and what how to classify them.

I [am All applicable exercises are available with McGraw-Hlll's Connect'D Accounting. EXERCISE 71 ABC Cost Hierarchy [LOT1] The following activities occur at Greenwich Corporation, a company that manufactures a variety of products. Receive raw materials from suppliers. Manage parts inventories. Do r0ugh milling work on products. Interview and process new employees in the personnel department. Design new products. Perform periodic preventive maintenance on general-use equipment. Use the general factory building. Issue purchase orders for a job. F'"P.--S'P-9.'9' Required: Classify each of the activities above as either a unit-level, batch-level, product-level, or organization-sustaining activity