If V is the design speed of vehicles in km/hour, the change of radial acceleration in metres/sec3, is

• A. <img src="/_files/images/civil-engineering/highway-engineering/31-16-96-1.png">
• B. <img src="/_files/images/civil-engineering/highway-engineering/31-16-96-2.png">
• C. <img src="/_files/images/civil-engineering/highway-engineering/31-16-96-3.png">
• D. <img src="/_files/images/civil-engineering/highway-engineering/31-16-96-4.png">
• E. 80/(75+V)