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: Surgery
[{'content': '. Treatment of choice in cold nodule of thyroid \nSelect and explain. \nA. Subtotal thyroidectomy, B. Wait and watch, C. I-131, D. Hemithyriodectomy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]