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 supply to the perineum is 
Select and explain. 
A. Pudendal nerve, B. Inferior rectal nerve, C. Pelvic splanchnic nerves, D. Hypogastric plexus
A: Pudendal nerve
Answer: A: Pudendal nerve 
Explanation: Pudendal nerve, its course through the lesser sciatic foramen, and branches, including inferior anal at bottom right. The superficial branches of the internal pudendal aery. The perineal nerve is a nerve arising from the pudendal nerve that supplies the perineum. Ref - BDC 6e vol2 pg363