An increasing number of new passenger car models are being shipped

An increasing number of new passenger car models are being shipped with side-impact air bags as standard equipment, in part because such air bags are known to be beneficial in many accident scenarios and in part because not having them is regarded as a marketing disadvantage. However, side-impact air bags are not entirely without risk; for example, they can result in serious injury if a passenger is leaning against the window or the door when an accident takes place. Thus, a leading advocacy group has taken the position that side-impact air bags should not be made standard on all models until their absolute safety can be guaranteed.

Which of the following, if true, would most strengthen the position of the advocacy group?
A. Shoulder belts for passengers in the rear middle seat of a vehicle save many more lives per year than side-impact air bags do.
B. Side-impact air bags have lessened the exhilaration of driving.
C. Each year, many people are injured when a side-impact air bag inflates against an object suspended from a coat hanger in a vehicle.
D. Features should not be made standard until they are proven to be completely safe.
E. No feature of a vehicle will ever be absolutely safe.