This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'All occurs in botulism except \nSelect and explain. \nA. Diplopia, B. Diarrhoea, C. Dysphagia, D. Dysahria', 'role': 'user'}, {'content': "Answer: B \nExplanation: The onset of botulism is marked with diplopia, dysphagia and dysahria due to cranial nerve involvement. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 269", 'role': 'assistant'}]