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': 'Which technique of facial fracture treatment involves purely closed reduction? \nSelect and explain. \nA. Application of miniplates, B. Dynamic compression plating, C. Maxillo-mandibular fixation, D. Use of wire osteosynthesis across fracture site', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]