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': 'A dermatome is used: \nSelect and explain. \nA. To remove scar tissue, B. To harvest skin grafts, C. To abrade skin which is pigmented, D. For pairing of lacerated soft tissue', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]