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
Steam under pressure is used in _________ sterilization 
Select and explain. 
A. Pasteurization, B. Autoclave, C. Kochs sterilizer, D. hot air oven
B: Autoclave
Answer: B: Autoclave 
Explanation: None