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': 'Wound contraction can be most effectively minimized by: \nSelect and explain. \nA. Split skin graft, B. Full thickness grafting, C. Allowing secondary granulation, D. Dressing with placenta', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]