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': 'TRUE regarding cholera is - \nSelect and explain. \nA. Toxin acts on GM 1 receptor, B. Toxin action is cAMP mediated, C. Peritrichate flagella, D. Utilises arginine and lysine', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Toxin action is cAMP mediated V. cholerae produces cholera toxin, the model for enterotoxins, whose action on the mucosal epithelium is responsible for the characteristic diarrhoea of the cholera.", 'role': 'assistant'}]