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': 'The surgeon who introduced catgut in surgery was ? \nSelect and explain. \nA. Astley Cooper, B. Lord Lister, C. John Hunter, D. Syme', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., John Hunter", 'role': 'assistant'}]