Which of the following is the best example of a warning defect?

A. The Ford Pinto's gas tank was aligned in such a way as to greatly increase the chances of a fire in the event that the car was rear-ended by another car.
B. The instructions for taking a heart medication drug did not say anything about studies that showed the drug increased the chances of a heart attack by 30%.
C. Storm was injured when she tried to climb up a bookshelf to retrieve her purse that had been placed on top of the bookshelf by some meddling kids.
D. A machine at the Sanchez Company's factory malfunctioned and this caused several of its products to be incorrectly assembled.

Answer: B. The instructions for taking a heart medication drug did not say anything about studies that showed the drug increased the chances of a heart attack by 30%.