This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': "Abbey's flap is used for reconstruction of-( \nSelect and explain. \nA. Breast repair, B. Upper lip repair, C. Cheek repair, D. Cheek repair", 'role': 'user'}, {'content': 'Answer: B \nExplanation: The cross-lip flap, or Abbe flap, is a staged flap based on the labial aery. The Abbe flap is well suited for both upper and lower lip reconstructions. It is more commonly used as a lower lip flap transferred to the upper lip with both the central and lateral lower lip serving as a donor site. Ref Davidson 23rd edition pg 1209', 'role': 'assistant'}]