For a service business,the minimum cardinalities between Sales event and Inventory entity are most likely both 0 for all except which of the following reasons?
A)Service businesses don't sell inventory,they only use inventory to perform services.
B)A sale doesn't have to include any inventory.
C)Inventory can exist that hasn't been part of a sale yet.
D)Some services only require labor.

Question

Quizplus · Accepted Answer

Service businesses may not sell inventory as products, but they use inventory (e.g., parts, supplies) to perform services. Thus, a sales event in a service business might not always involve inventory directly in the transaction (as in selling a product), but inventory is still used or consumed in providing the service. Choices B, C, and D support the idea of 0 cardinalities, indicating situations where sales and inventory do not necessarily directly correlate.

For a Service Business,the Minimum Cardinalities Between Sales Event and Inventory