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: Medicine
[{'content': 'An 18-year-old male presented with acute onset a history of blurring of vision for the same duration on examination, the patient has quadriparesis with areflexia. Both the pupils are non-reactive.The most probable diagnosis is - \nSelect and explain. \nA. Poliomyelitis, B. Botulism, C. Diphtheria, D. Porphyria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. Botulism', 'role': 'assistant'}]