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: Microbiology
Brown's tube is used for: 
Select and explain. 
A. Steam sterilization, B. Radiation, C. Chemical sterilization, D. Filtration
A: Steam sterilization
Answer: A: Steam sterilization 
Explanation: Ans. is. 'a' i. e., Steam sterilization