In Which of the Following Circumstances Is Revenue NOT Earned

Multiple Choice

In which of the following circumstances is revenue NOT earned by a company?

A) In return for goods supplied,a customer paid $1000 in cash.
B) In return for goods supplied,a customer promised to pay $1000 later.
C) In return for goods supplied,a customer gave the company $1000 in equipment.
D) A customer paid $500 deposit for goods to be supplied in the next accounting period.