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 treatment of choice for anaplastic carcinoma of thyroid infiltrating Sternum will be \nSelect and explain. \nA. Radical excision, B. Chemotherapy, C. Radiotherapy, D. Palliative / Symptomatic treatment', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]