Roderick, the manager of a big jewelry store is looking through the relational database of the business. In the store's large inventory, products are listed as "ITEMS"; such items are rings, such as wedding bands; piercing studs, such as lip studs; and pendants, such as crosses and hearts. For each item, there are also listings of carat, prices and inventory number. Which of these examples is an entity instance in the database?

Items

Carat

Price

Rings