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': 'Nerve tested in pupillary reflex is \nSelect and explain. \nA. 2nd and 3rd, B. Only 3rd, C. only 2nd, D. 3rd and 5th', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Afferent - 2nd nerve.\nEfferent - 3rd nerve.', 'role': 'assistant'}]