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': 'Polio virus infection can result in all, except - \nSelect and explain. \nA. Anterior horn cell damage, B. Autonomic involvement, C. Respiratory involvement, D. Paralysis in > 70% of cases', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]