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': 'Irradiation can be used to sterilize A/E ? \nSelect and explain. \nA. Bone graft, B. Suture, C. Aificial tissue graft, D. Bronchoscope', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Bronchoscope Endoscops are sterilized by chemical methods :? i) Rigid endoscope ---> Autoclave ii) Flexible endoscope --> Glutaraldehyde Bone & tissue graft, and cat gut suture are sterilized by ionizing radiation ('y - rays)", 'role': 'assistant'}]