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': 'What is the fastest, safest and most effective to sterilize a metal impression tray with a solder that melts at a temperature above 175°C? \nSelect and explain. \nA. Filtration, B. Autoclaving, C. Dry heat sterilization, D. Soakig in 2% glutaraldehyde', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]