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': 'Characteristic feature of Lefort1 fracture: \nSelect and explain. \nA. Epistaxis, B. Bleeding from ear, C. Hemorrhage into maxillary sinuses, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: In LeFort I fracture, there is hemorrhage in to maxillary sinuses. When antral cavities become full blood starts leaking through the nose. The nasal passages may get blocked with this clotted blood.', 'role': 'assistant'}]