This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mesentry, neurovascular bundle, Subject name: Anatomy
Pudendal nerve root value: 
Select and explain. 
A. L5 S1 roots, B. S1 S2 roots, C. L2 L3 roots, D. S2 S3S4 roots
D: S2 S3S4 roots
Answer: D: S2 S3S4 roots 
Explanation: Pudendal nerve arises from the sacral plexus in the pelvis( S2- S4). Pudendal nerve is nerve of perineum. External urethral sphincter supplied by pudendal nerve.