This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
[{'content': 'Best method of sterilizing disposable syringes is - \nSelect and explain. \nA. Hot air oven, B. UV rays, C. Boiling, D. Gamma rays', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ionizing radiation: commercial plants use gamma radiation for sterilizing items like plastics, syringes, swabs, catheters, animal feeds, cardboard, oils, greases, fabrics, and metal foils REF:Ananthanarayan and Panicker's Textbook of Microbiology 8thEdition pg no:35", 'role': 'assistant'}]