Which of the Following Is Needed to Impose a Quasi-Contract

Which of the following is needed to impose a quasi-contract?

A) A benefit having been conferred and injustice if the benefit were not paid for.
B) Actions implying a contract and an agreement as to the price.
C) A promise asking for action and the requested action having been completed.
D) A benefit having been conferred and objective intent that it be conferred.