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': 'Proctoscope is sterilised by: \nSelect and explain. \nA. Autoclave, B. Glutaraldehyde, C. Formalin, D. Soap', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Glutaraldehyde', 'role': 'assistant'}]