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': 'Most potential route for transmission of Meningitis from CNS to Inner ear is - \nSelect and explain. \nA. Cochlear Aqueduct, B. Endolymphatic sac, C. Vestibular Aqueduct, D. Hyrtle fissure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Cochler aqueduct is a bony canal that connects the cochlea to the intracranial subrachnoid space. Perilymph within the cochlear\xa0aqueduct is in direct continuation with the CSF and hence Cochlear Aqueduct is the most important route for meningitis to spread\xa0to the inner ear.', 'role': 'assistant'}]