Which of the following is NOT one of the four main types of inventory?

A. work-in-process inventory

B. finished-goods inventory

C. maintenance/repair/operating supply inventorysafety stock inventoryraw material inventory

Safety stock inventory

Explanation:

There are three process to make the product ready to sale which are shown below:

1. Raw material inventory

2. Work in progress inventory

3. Finished goods inventory

By these processes, the product is ready for sale. It passes by these three process cycles which is also a type of inventory. It also involves maintenance/repair/operating supply inventory