Choice "B" is correct. Any affirmation of fact or promise that becomes part of the basis of the bargain creates an express warranty.
Choice "a" is incorrect. There is no warranty under the Sales Article entitled the "warranty of marketability."
Choice "d" is incorrect. The warranty of merchantability is a promise that the goods will be fit for their ordinary purposes. Nothing here indicates that the home dishwasher would be unfit for its ordinary purpose of washing dishes in a home.
Choice "c" is incorrect. The warranty against infringement is a promise that the goods sold do not infringe on another's patents or copyrights. Nothing indicates that this warranty was breached here.