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
[{'content': 'The cholera vibrio - \nSelect and explain. \nA. Is strongly anaerobic, B. Grows best at 25degC, C. Has marked tolerance of alkaline pH, D. Grows over a wide range but best at a slight acid pH', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Has marked tolerance of alkaline pH", 'role': 'assistant'}]