This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and PNS, Subject name: ENT
[{'content': 'CSF rhinorrhoea occurs most commonly due to fracture of: \nSelect and explain. \nA. Tegmen tympani, B. Cribriform plate, C. Frontal sinus, D. Sphenoid sinus', 'role': 'user'}, {'content': "Answer: B \nExplanation: (b) Cribriform plate(Ref. Cummings, 6th ed., 805)The most common site of traumatic CSF rhinorrhoea is fracture of lateral lamella of cribriform plate. The other mentioned site's fractures can also cause CSF rhinorrhoea/otorhinorrhoea.", 'role': 'assistant'}]