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': 'In steel richardson syndrome following are seen except - \nSelect and explain. \nA. Convulsion, B. Ataxia, C. Progressive supranuclear palsy, D. Dementia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]