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: Microbiology
[{'content': "Brown's tube is used for: \nSelect and explain. \nA. Steam sterilization, B. Radiation, C. Chemical sterilization, D. Filtration", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is. 'a' i. e., Steam sterilization", 'role': 'assistant'}]