Answer:
d. Companies that use a perpetual inventory system must take a physical inventory to determine inventory on hand on the balance sheet date and to determine cost of goods sold for the accounting period.
Step-by-step explanation:
The perpetual inventory is a method by which all is recorder in the books, so it is a fairly accurate approximate of the inventory that the company actually has on hand, because of that the company has a very good description and idea of how much the goods sold in a certain period was, without the necessity of doing a physical inventory.