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: Surgery
[{'content': 'Carpal tunnel syndrome is due to involvement of which nerve: March 2009 \nSelect and explain. \nA. Radial nerve, B. Median nerve, C. Ulnar nerve, D. Axillary nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: Median Nerve', 'role': 'assistant'}]