This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Imaging of Musculoskeletal Tumors, Subject name: Radiology
[{'content': 'Investigation of choice for intramedullary SOL is - \nSelect and explain. \nA. MRI, B. USG, C. CT, D. X-ray', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., MRI o Investigation of choice for intramedullary space occupy lesion is MRI.", 'role': 'assistant'}]