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: Social & Preventive Medicine
[{'content': 'Disposable syringes are sterilized by ? \nSelect and explain. \nA. Autoclave, B. Cidex (2% glutaraldehyde), C. Ethylene oxide, D. Hot air oven', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' i.e., Ethylene oxide "Ethylene oxide used mainly by industry for the sterilization of plastic and other thermolabile material that can not withstand heating" -- Greenwood 16th/e p. 74. Other methods for sterilization of heat labile instruments Ionizing radiation Formaldehyde in combination with subatmospheric steam.', 'role': 'assistant'}]