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: ENT
[{'content': 'Stage IV a with thyroid cartilage invasion in larynegeal carcinoma is treated with \nSelect and explain. \nA. Radiotherapy, B. Hemilaryngectomy, C. Total laryngectomy, D. Total laryngectomy with radiotherapy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]