If N is deviation angle the length L of a parabolic vetical curve for overtaking sight distance S, is

• A. <img src="/_files/images/civil-engineering/highway-engineering/48-16-321-1.png">
• B. <img src="/_files/images/civil-engineering/highway-engineering/48-16-321-2.png">
• C. <img src="/_files/images/civil-engineering/highway-engineering/48-16-321-3u.png">
• D. <img src="/_files/images/civil-engineering/highway-engineering/48-16-321-4.png">
• E. Both (A) and (C)