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: Radiology
[{'content': 'Material used in veebroplasty: \nSelect and explain. \nA. Polymethyl methacrylate, B. IsoMethyl Methacry]ate, C. Isoethyl Methacrylayte, D. Silicon', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Polymethyl methacrylate', 'role': 'assistant'}]