Choose the sentence in this excerpt that provides evidence of the value of forward-collision warning systems.
A. Some systems even tighten the seat belts in preparation for a collision.
B. A few FCW systems go a step further by automatically braking the cars if drivers do not respond quickly enough.
C. Researchers have seen a seven percent reduction in crashes for vehicles with a basic FCW system, with a 14 percent reduction for those with automated braking.
D. FCW, which is standard on many luxury cars, is beginning to be incorporated in some less-expensive models.