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': 'Thyroxine can be given in which thyroid carcinoma: September 2009 \nSelect and explain. \nA. Papillary, B. Medullary, C. Anaplastic, D. Undifferentiated', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A: Papillary On the basis that most of the tumours are TSH depedent it is a standard practice to prescribe thyroxine for all patients after operation for differentiated thyroid carcinoma (papillary and follicular type) to suppress endogenous TSH production.', 'role': 'assistant'}]