If V is the velocity in km.p.h., t the brake reaction time in seconds and the efficiency of the brakes, the stopping distance S of the vehicle, is

• A. <img src="/_files/images/civil-engineering/highway-engineering/30-16-70-1.png">
• B. <img src="/_files/images/civil-engineering/highway-engineering/30-16-70-2.png">
• C. <img src="/_files/images/civil-engineering/highway-engineering/30-16-70-3.png">
• D. <img src="/_files/images/civil-engineering/highway-engineering/30-16-70-4.png">