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': 'Apparant lenghthening is seen in TB Hip of \nSelect and explain. \nA. Stage 1, B. Stage 2, C. Stage 3, D. Stage 4', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]