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
Most potential route for transmission of Meningitis from CNS to Inner ear is - 
Select and explain. 
A. Cochlear Aqueduct, B. Endolymphatic sac, C. Vestibular Aqueduct, D. Hyrtle fissure
A: Cochlear Aqueduct
Answer: A: Cochlear Aqueduct 
Explanation: Cochler aqueduct is a bony canal that connects the cochlea to the intracranial subrachnoid space. Perilymph within the cochlear aqueduct is in direct continuation with the CSF and hence Cochlear Aqueduct is the most important route for meningitis to spread to the inner ear.