Answer:
a. Revenue recognition principle
Step-by-step explanation:
The revenue recognition principle refers to the principle in which the revenues are recorded when it is realized or earned. It follows the accrual basis of accounting
It is not recorded when the cash is actually received.
When the sale is made, the same is to be shown in the books of accounts
Therefore as per the GAAP, the revenue should be addressed by revenue recognition
hence, the correct option is a.