This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Microbiology
[{'content': 'Which is used for sterilization of cystoscope \nSelect and explain. \nA. Glutaraldehyde, B. Formaldehyde, C. Isopropyl alcohol, D. Ethylene oxide', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Glutaraldehyde', 'role': 'assistant'}]