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: ENT
[{'content': 'Cochlear aqueduct - \nSelect and explain. \nA. Connects internal ear with subarachnoid space, B. Connects cochlea with vestibule, C. Contains endolymph, D. Same as Scala media', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cochlear aqueduct connects scala tympani with the subarachnoid space. This is the reason why otitis media can lead to meningitis', 'role': 'assistant'}]