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 are true for maxillary fracture except: \nSelect and explain. \nA. Geriatric maxillary fracture is difficult to treat, B. Pediatric  maxillary fracture is more comminuted, C. Midpalatal fracture has 8% incidence, D. All 4 buttresses are seldom fracture', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]