On January 15, 2018, Bella Vista Company enters into a contract to build custom equipment for ABC Carpet Company. The contract specified a delivery date of March 1. The equipment was not delivered until March 31. The contract required full payment of $75,000 within 30 days after delivery. The profit on this contract should be recorded

A) on January 15, 2018.

B) on March 1, 2018.

C) on March 31, 2018.

D) on April 30, 2018.