garfield owns and operate a retail shoe store. garfield contracts with wholesaler to buy 1,200 pairs of running shoes at $25 per pair. when the shoes arrive, the boxes are torn and there is battery acid on some of them. some but not all of the shoes are damaged. garfield and wholesaler reach an agreement by telephone. in exchange for a 15% discount, garfield agrees to accept the shoes as-is. garfield promptly pays the reduced amount. one week later, wholesaler changes his mind and sues garfield for the remaining 15%. who wins?