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': 'Schwannoma involves the - \nSelect and explain. \nA. Vestibular part of VIIIth nerve, B. Cochlear part of VIIIth nerve, C. Vagus nerve, D. Hypoglossal nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]