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': 'T3 N1 M0 stage of carcinoma larynx is treated by - \nSelect and explain. \nA. Radiotherapy, B. Surgery, C. Chemotherapy, D. Surgery and radiotherapy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]