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: Pathology
[{'content': 'Autoclave works at which of these settings? \nSelect and explain. \nA. 160 degree C, 20 psi, 15 min, B. 121 degree C, 15 psi, 15 min, C. 120 degree C, 15 psi, 10 min, D. 121 degree C, 15 psi, 15 sec', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]