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': 'In TB spine the first symptom is - \nSelect and explain. \nA. Decreased sensation, B. Decreased motor power, C. Pain, D. Increased deep tendon reflexes.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Pain is the earliest and commonest symptom. Initially the pain occurs on sudden movement. Later it occurs at rest also.', 'role': 'assistant'}]