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': 'Which of the following flaps are used for lip reconstruction: \nSelect and explain. \nA. Webster-Bernard Flap / repair, B. Karapandzic flap, C. Abbe-Estlander flap, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cross lip flaps:\nAbbe-Estlander Flap: Based on labial artery.\nCircumoral advancement Flaps:\n\nKarpandzic flap: Neuromuscular flap based on labial artery.\nWester-Bernard repair: Lateral nasolabial flap.', 'role': 'assistant'}]