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: Anatomy
[{'content': 'Hypoglossal nerve is \nSelect and explain. \nA. Purely sensory, B. Purely motor, C. Mixed, D. Spinal nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]