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': 'A 35-year-old man with a Lefort III fracture\ncomplains of blood tinged watery discharge from his nose 2 days after the trauma. CT scan confirms NOE fracture as well.\nThe most common complication of CSF rhinorrhea is \nSelect and explain. \nA. Brain herniation, B. Blindness, C. Ascending Meningitis, D. Cavernous sinus thrombosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]