Which of the Following Is an Equitable Doctrine That Protects

Multiple Choice

Which of the following is an equitable doctrine that protects those who foreseeably and reasonably rely on the promises of others by enforcing such promises when enforcement is necessary to avoid injustice,even though one or more of the elements normally required for an enforceable agreement is absent?

A) Promissory estoppel
B) Quasi-contract
C) Freedom of contract
D) Implied in law contract