This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neoplasia, Subject name: Surgery
[{'content': 'Treatment of choice for carcinoma of lip of less than 1 cm is: \nSelect and explain. \nA. Radiation, B. Chemotherapy, C. Excision, D. Radiation and chemotherapy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: c (Excision)Ref: Bailey & Love, 24th ed, p. 712 & 23rd ed, p. 644', 'role': 'assistant'}]