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': 'CSF otorrhoea is caused by - \nSelect and explain. \nA. Fracture of cribriform plate, B. Fracture of parietal bone, C. Fracture of petrous temporal bone, D. Fracture of tympanic membrane', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]