This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cranial Nerves, Subject name: Anatomy
[{'content': 'Which of the following cranial nerve is a pure motor nerve? \nSelect and explain. \nA. 3, B. 5, C. 8, D. 9', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pure sensory 1-olfactory 2-optic 8-vestibulocochlear Pure motor 3-oculomotor 4-trochlear 6-abducent 11-accessory 12-hypoglossal Mixed 5-trigeminal 7-facial 9-glossopharyngeal 10-vagus', 'role': 'assistant'}]