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': 'Carcinoma tongue less than 2 cm is treated by - \nSelect and explain. \nA. Excision, B. Radiotherapy, C. Chemotherapy, D. Excision and Radiotherapy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]