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': 'Prolapsed interveebral disc (PID) is most common at: September 2012 \nSelect and explain. \nA. C2-C3, B. T10-T11, C. L2-L3, D. L4-L5', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. L4-L5', 'role': 'assistant'}]