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': 'Treatment of choice for carcinoma of lip of lessthan 1 cm is - \nSelect and explain. \nA. Radiation, B. Chemotherapy, C. Excision, D. Radiation and Chemotherapy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]