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 operating temperature in an ethylene oxide sterilization during warm cycle is : 
Select and explain. 
A. 20-350C, B. 49-630C, C. 68-880C, D. 92-1100C
B: 49-630C
Answer: B: 49-630C 
Explanation: None