Morton Owed Dowd $1,000

Morton owed Dowd $1,000. The debt was due on May 1. The debt would not be discharged if

A) on the due date, Dowd agreed to accept $500 and a watch valued at $150 in full settlement of the debt.
B) Dowd insisted the debt was $1,000, but Morton claimed it was $500, and they compromised on $650 in full settlement.
C) on April 15, Dowd agreed to accept $500 in full settlement.
D) on July 1, Dowd orally agreed to accept $500 in full settlement of the $1,000 debt.