This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Sharp instruments may be sterilized with- \nSelect and explain. \nA. Radiation, B. Lysol, C. Hot air, D. Any of the above', 'role': 'user'}, {'content': "Answer: C \nExplanation: Hot air is useful for sterilizing aicles such as glassware, syringes, swabs, dressing, French chalk oil , Vaseline and sharp instruments. The drawback of hot air is that it has no penetrating power and is not suitable for disinfection of bulky aicles such as mattresses Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 140", 'role': 'assistant'}]