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': 'Parkinsonism is characterised by all of the following characteristic features except : \nSelect and explain. \nA. Rigidity, B. Akinesia, C. Tremors at rest, D. Past pointing', 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is D (Past pointing): Past pointing is a feature of 'Cerebellar disease'. It is not seen in an extrapyramidal syndrome. Other features mentioned are all true for Parkinsonism.", 'role': 'assistant'}]