Question $18(1$ point$)$

Under common law,

a contractual obligation may arise even if the agreement has open terms

an offer can be revoked at any time prior to acceptance unless the offeror has given the offeree an option

if the acceptance is the same as the offer, no contract results

there is no consideration if one party wants to forgive another's breach by written waiver or renunciation signed and delivered by the aggrieved party

no written agreement is required to discharge a breaching party