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': 'Toxic adenoma on scanning appear as \nSelect and explain. \nA. Hot nodule, B. Cold nodule, C. Warm nodule, D. Neutral', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]