This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Nerve root of pudendal nerve is - 
Select and explain. 
A. S 1S2S3, B. S2S3S4, C. S3-S4, D. S2-S3
B: S2S3S4
Answer: B: S2S3S4 
Explanation: Pudendal nerve- S2,3,4