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: Unknown
[{'content': 'Generation time for E.coli is \nSelect and explain. \nA. 2 MIN, B. 20 MIN, C. 2 hrs, D. 20 days', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans: b) 20mts Generation time of E COLI 20 MIN M TB 16-18 HOURS M LEPRAE 14 DAYS', 'role': 'assistant'}]