Which of the Following Best Describes an Application of the Entity

Which of the following best describes an application of the entity concept?

A) Property is exchanged with another business for services received.
B) Transactions are valued in terms of the currency of the business' country.
C) An owner uses their personal checking account to buy milk at the grocery store.
D) A transaction is recorded based on the dollars exchanged at the time of the transaction.
E) A sales transaction is recorded from the customer sales order.