Which of the Following Transactions Constitutes an Accrual Adjustment Involving

Which of the following transactions constitutes an accrual adjustment involving a revenue account?

A) Revenue earned, but not yet collected, on investments
B) Revenue earned during the period from an amount that was previously recorded as a liability when the cash was received
C) Wages incurred, but not yet paid to employees, at the end of the accounting period
D) Interest owed, but not yet paid, on a note payable