This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerves of Abdomen, Subject name: Anatomy
[{'content': 'Nerve supply to the perineum is - \nSelect and explain. \nA. Pudendal nerve, B. Inferior rectal nerve, C. Pelvic splanchnic nerves, D. Hypogastric plexus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Pudendal nerve o Pudendal nerve arises from S2S3S4 and is a mixed nerve (motor + sensory).o It enters the gluteal region through greater sciatic notch and leaves it through lesser sciatic notch to enter pudendal canal.o Pudendal nerve is the chief nerve of perineum and external genitalia.", 'role': 'assistant'}]