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
Sharp instruments may be sterilized with- 
Select and explain. 
A. Radiation, B. Lysol, C. Hot air, D. Any of the above
C: Hot air
Answer: C: Hot air 
Explanation: 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