Two Cars Are Traveling at the Same Speed and Hit

Multiple Choice

Two cars are traveling at the same speed and hit the brakes at the same time.Car A decelerates (decreases its velocity) at twice the rate of car B.If car B takes time T to stop,how long does it take car A to stop?

A) 4T
B) 2T
C) T
D) T /2
E) T/4