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: Pharmacology
[{'content': 'Thyroxine is used in the treatment of which thyroid cancer: \nSelect and explain. \nA. Medullary, B. Radiation induced, C. Anaplastic, D. Papillary', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]