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': 'A building contractor suddenly complains of lower backache which increase on bending down He has \nSelect and explain. \nA. Renal colic, B. Tuberculosis of spine, C. Disc prolapse, D. Fibrositis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Disc prolapse', 'role': 'assistant'}]