This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Microbiology
Glassware is sterilized in hot air over at what temperature - 
Select and explain. 
A. 70degC for 30 minutes, B. 50degC for 1 hour, C. 121 degC for 15 minutes, D. 160degC for 45 minutes
D: 160degC for 45 minutes
Answer: D: 160degC for 45 minutes 
Explanation: Ans. is 'd' i.e., 160degC for 45 minutes MethodTemperature (degC)Holding time (in minutes)Autoclave12115 12610 1343Hot air oven16045 17018 1807.5 1901.5