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': 'Abbe westlander flap is used to reconstruction of ? \nSelect and explain. \nA. Tongue, B. Lip, C. Breast, D. Nose', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Abbe westlander flap based on labial artery is used to reconstruct lip.', 'role': 'assistant'}]