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': 'Compression osteogenesis uses: \nSelect and explain. \nA. Distraction osteogenesis, B. Non/fibrous union, C. Hemi mandibulectomy hyperplasia treatment, D. Bone graft', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]