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': 'Treatment of Ca larynx in stage. T1MoNo is - \nSelect and explain. \nA. Radiotherapy, B. Surgery total laryngectomy, C. Laser therapy, D. Microlaryngoscopic surgery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]