This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
[{'content': 'The most common site of the leak in CSF rhinorrhea is( REPEAT QUESTION) \nSelect and explain. \nA. Sphenoid sinus, B. Frontal sinus, C. Cribriform plate, D. Tegmen tympani', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Leakage of CSF is most commonly seen in the anterior cranial fossa at the level of the cribriform plate as it is extremely thin. (Ref: Diseases of nose ear and throat; Logan Turner; pg 28)', 'role': 'assistant'}]