McKenzie Bros. Inc. manufactures North American Ale, a popular brand of beer. A consumer of the beer, Tom, falls ill. His physician discovers that the beer Tom consumed contained a poisonous substance. Tom sues McKenzie Bros. Inc. under a strict products liability theory. What is the best defense that McKenzie Bros. Inc. could offer?
A) Beer is an inherently but not unreasonably dangerous product.
B) The poisonous substance was injected into Tom's beer by the retailer who sold it to him.
C) Tom assumed the risk of injury when he consumed the beer.
D) There is no defense to strict products liability claims.