This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plastic Surgery and Skin Lesions, Subject name: Surgery
[{'content': 'Split skin grafts in young children should be harvested from: \nSelect and explain. \nA. Buttocks, B. Thigh, C. Trunk, D. Upper limb', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Paial Thickness (Thiersch) or Split Skin Graft Consist of epidermis and variable poion of dermisQ Site: Thigh (MC)Q upper arm, flexor aspect of forearm and abdominal wall Grafts are hairless and do not sweatQ (these structures are not transferred) MC causes of skin graft failure: Hematoma (or seroma), infection, and movement (shear).', 'role': 'assistant'}]