Slimline and Distributor signed a contract which provided that Distributor would use reasonable efforts to promote and sell Slimline's diet drink. Slimline was already being sold in Warehouse Club. After the contract was signed, Distributor stopped conducting in-store demos of Slimline. It did not repackage the product as Slimline and Warehouse requested. Sales of Slimline continued to increase during the term of the contract. Slimline sued Distributor, alleging a violation of the agreement. Who should win?