Answer:
recorded on March 31, 2021.
Step-by-step explanation:
According to the U.S Generally Accepted Accounting Principles, the revenue should be recognized when the service is rendered to the customer, the selling price of the product is fixed, confirmation of service arrangement, and confirmability of service amount to be collected
Since in the given situation, the equipment was not delivered until March 31 so the same is to be recognized i.e March 31