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: Pathology
[{'content': 'Positive Tinel sign is suggestive \nSelect and explain. \nA. Nerve regeneration, B. Wallerian Degeneration, C. Muscle Weakness, D. Loss of reflex', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]