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
The autoclave method of sterilization: September 2004 
Select and explain. 
A. Is performed under atmospheric pressure, B. Raising temperature to 120degC, C. Utilizes dry heat, D. All of the above
B: Raising temperature to 120degC
Answer: B: Raising temperature to 120degC 
Explanation: Ans. B i.e. Raising temperature to 120degC