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': 'Argyll Robeson Pupil results from the lesion of: \nSelect and explain. \nA. Accessory ganglion, B. Ciliary ganglion, C. Tectum region, D. Lateral geniculate body', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Tectum region', 'role': 'assistant'}]