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': 'Ogaura Inawa and Hikojima are the serotypes of: \nSelect and explain. \nA. Yersina, B. Vibrio cholerae, C. E Coli, D. Salmonella typhi', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is. 'b' i. e., Vibrio cholerae", 'role': 'assistant'}]