This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
[{'content': 'Which of the following cranial nerve is a pure sensory nerve? \nSelect and explain. \nA. CN 3, B. CN 5, C. CN 8, D. CN 9', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. C CN 8Ref: Netter's Atlas of Neurosciences, pg. 265* Cranial nerve 3 is pure motor nerve and performs ocular movement.* Cranial nerve 5 performs mastication and is sensory to face.* Cranial nerve 9 is a mixed nerve and carries taste from posterior 1/3rd of tongue and performs swallowing with help of stylopharyngeus.* CN 8th is pure sensory. Associated with hearing and balancing", 'role': 'assistant'}]