By Which of the Following May a Buyer Waive Implied

By which of the following may a buyer waive implied and express warranties?

A) By failing to examine goods for which an express warranty was created by a sample or model.
B) By failing to comply with the seller's request to inspect the goods.
C) By failing to examine goods for which an express warranty was created by a sample or model, and also by failing to comply with the seller's request to inspect the goods.
D) By failing to require that warranties be given in writing and also by failing to comply with the seller's request to inspect the goods.
E) None of these. A buyer may not waive both implied and express warranties.