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': 'Flapping tremors are seen in the following conditions except - \nSelect and explain. \nA. Uremic encephalopathy, B. Parkinsonism, C. Hepatic encephalopathy, D. Carbon dioxide narcosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]