An interior decorator asked a woodworker she met at a crafts fair to build a curly maple armoire. they entered into a written contract, with a contract price of $6,500 to be paid upon the decorator's receipt of the armoire. when the work was completed, the woodworker shipped the armoire to the decorator. after inspecting it, the decorator felt that it was not of the same high level of workmanship as she was expecting, given the other furniture that the woodworker had showcased at the fair, and a good faith dispute arose between the parties as to the workmanship. the decorator sent the woodworker a check for $4,000 marked "payment in full." the woodworker indorsed and cashed the check, then sued the decorator to recover the $2,500 balance. most courts would hold that: a the woodworker's cashing of the check constituted an accord and satisfaction, discharging the decorator's duty to pay the balance. b the woodworker can recover the $2,500 balance from the decorator. c the woodworker is estopped to sue for the balance because he cashed the check knowing that it was being tendered in full settlement. d the woodworker's indorsing a check so marked constituted a written release, thereby discharging the contract.