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': 'All of the following show compression osteosynthesis except: \nSelect and explain. \nA. Dynamic compression plates., B. Champys mini plates., C. Eccentric compression plates., D. Lag screw.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]