The Wonder Co

The Wonder Co. manufactures vapourizers. The cap of the Model 400 can be easily removed, and if this is done when the machine is on, the escape of steam can burn a person. For that reason, the company included several warnings in the packaging accompanying the vapourizer, and even had a large and explicit warning right on the machine. Wonder is no longer making the Model 400, and the Model 500 has a safety lock that prevents children from removing the cap. The cost to Wonder of the cap was about 50 cents. The Hendersons' five-year-old removed the cap of the Model 400 vapourizer in his room and was severely burned. The Hendersons sue Wonder. Which of the following is FALSE?

A) The defendants satisfied the duty to warn. It is not liable.
B) The defendant knew of the dangers of the Model 400 and should have recalled those on the market.
C) The defendant was guilty of negligent design.
D) Since it was not prohibitively expensive to make a safer product, the defendant should have done so.
E) Both A and D