This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'Endolymph is present in: \nSelect and explain. \nA. Scala media, B. Scala vestibule, C. Scala tympani, D. Cochlear aqueduct', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref: Diseases of Ear, Nose tfc Throat, by Dhingra 5th edition . ch on anatomy of earExplanation:Scala vestibule and scala tympani are filled with perilymphScala media filled with endolymph', 'role': 'assistant'}]