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': 'A 45 year old patient is suffering from diffuse toxic goiter, Therapy of choice will be \nSelect and explain. \nA. Surgery, B. Antithyroid drugs, C. Radioiodine, D. Antithyroid drugs first\tfollowed by surgery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]