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': 'Tip of nose reconstruction is done by \nSelect and explain. \nA. Bipedicled flap, B. Bilobed flap, C. Full thickness skin graft, D. Split skin graft', 'role': 'user'}, {'content': "Answer: B \nExplanation: Local flaps A local flap is raised next to a tissue defect in order to reconstruct it Basic patterns of local flaps Transposition flap Most basic design, leaving a graftable donor site Z-plasty For lengthening scars or tissues Rhomboid flap For cheek, temple, back and flat surface defects Rotation flap For convex surfaces Advancement flap For flexor surfaces, may need triangles excised at the base to make it work (commonly called Burrow's triangles) V-to-Y advancement Commonly used for fingeips and extremities Bilobed flap For convex surfaces, especially the nose Bipedicle flap For eyelids, rarely elsewhere Ref: Sabiston 20th edition Pgno :836", 'role': 'assistant'}]