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 upper motor neuron lesion following is not seen: \nSelect and explain. \nA. Hypertonic muscles, B. Exaggerated superficial reflexes, C. Exaggerated deep reflexes, D. Positive Babinksy sign', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]