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
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: Ans. is 'c' i.e., Hot air