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': 'Endoscopes are strelized by: \nSelect and explain. \nA. Glutaraldehyde, B. Autoclave, C. Formaldehyde, D. Hot air oven', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Glutaraldehyde', 'role': 'assistant'}]