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': 'The following are true of primary thyrotoxicosis, EXCEPT \nSelect and explain. \nA. Tremors, B. Warm extremities, C. Diarrhea, D. Intolerance to cold', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]