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
The most common site of the leak in CSF rhinorrhea is 
Select and explain. 
A. Sphenoid sinus, B. Frontal sinus, C. Cribriform plate, D. Tegmen tympani
C: Cribriform plate
Answer: C: Cribriform plate 
Explanation: CSF rhinorrhea- Commonest site- Lateral lamella of cribriform plate of the ethmoidOther sites- Roof of ethmoids, posterior wall of the frontal sinus, Sphenoid sinusThe commonest cause of CSF rhinorrhoea- Iatrogenic TraumaRef: Hazarika; 3rd ed; Pg 361