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': "All are features of pyramidal tract lesion, Except - \nSelect and explain. \nA. Involuntary movement, B. Positive Babinski's sign, C. Spasticity, D. Increased deep tendon reflexes", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]