This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acoustic Neuroma, Subject name: ENT
[{'content': 'Schwannoma most commonly involves the: \nSelect and explain. \nA. Vestibular part of VIII nerve, B. Cochlear part of VIII nerve, C. Vagus, D. Hypoglossal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (a) Vestibular part of VIII nerve(Ref. Shambaugh, 6th ed., 644)Rarely it may originate from the other mentioned options in the question', 'role': 'assistant'}]