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': "Wolf's graft is \nSelect and explain. \nA. Partial thickness graft, B. Micro vascular free graft, C. Full thickness graft, D. Mucocutaneous flap", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]