This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
Nerve root of pudendal nerve is 
Select and explain. 
A. S1 S2 S3, B. S2 S3 S4, C. S3 - S4, D. S2 - S3
B: S2 S3 S4
Answer: B: S2 S3 S4 
Explanation: The pudendal nerve is derived from the sacral roots of S2-S4 and later divides into three branches, the dorsal clitoral/penile, the perineal, and the rectal. It carries motor, sensory and autonomic fibers. Ref - BDC 6e vol2 pg363