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: Ophthalmology
[{'content': 'The afferent pathway for light pupillary reflex is: \nSelect and explain. \nA. Trigeminal nerve, B. Optic nerve, C. Abducent nerve, D. Ciliary nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Optic nerve', 'role': 'assistant'}]