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': 'Investigution of choice for spinal TB? \nSelect and explain. \nA. X-ray, B. CT Scan, C. MRI, D. PET Scan', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., MRI", 'role': 'assistant'}]