This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Abbey estender flap is based on \nSelect and explain. \nA. Lingual aery, B. Facial aery, C. Labial aery, D. Internal maxillary aery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: .abbey flap is used for lip reconstruction so it is based on labial aery', 'role': 'assistant'}]