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': 'V. cholera true is - \nSelect and explain. \nA. Very resistant to alkaline pH, B. Nutritionally fastidious, C. Best growth at 24°C, D. Rod shaped bacilli', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]