Which piece of information would you provide to a group of young teenage drivers to decrease their chance of suffering a "whiplash"-type injury if involved in a motor vehicle collision?

A) Ensure that the head rest is properly positioned
B) Position the car's seats in a full upright position
C) Make sure the car has side-door air bags
D) Properly wear seat belts with a headrest in the down position

A) Ensure that the head rest is properly positioned