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: Orthopaedics
[{'content': "Clutton's joint are \nSelect and explain. \nA. Syphilitic joints, B. End stage Tuberculous joints, C. Associated with trauma, D. Usually painful", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]