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
Glassware is sterilized in Hot air oven at - 
Select and explain. 
A. 160degC for 1 hour, B. 170degC for 1 hour, C. 180degC for 1 hour, D. 190degC for 1 hour
A: 160degC for 1 hour
Answer: A: 160degC for 1 hour 
Explanation: Ans. is 'a' i.e., 160degC for 1 hour