Which of the Following Transactions Should Not Result in Revenue

Multiple Choice

Which of the following transactions should not result in revenue recognition in 2018?

A) Services for a customer were carried out on credit in 2018, to be collected in 2019.
B) Services were carried out for a customer for cash in 2018.
C) Payment was received from a customer in 2018, for services provided in 2017.
D) Goods were sold to a customer on credit in 2018, with cash to be collected in 2019.