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': 'Dye is injected in which vessel in cerebral angiography: \nSelect and explain. \nA. Brachial aery, B. Cubital vein, C. Femoral aery, D. Carotid aery', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Carotid aery', 'role': 'assistant'}]