This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Angiography, Subject name: Radiology
[{'content': 'Four vessel carotid angiography done by injecting dye into- \nSelect and explain. \nA. Radial aery, B. Brachial aery, C. Cubital vein, D. Femoral aery', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Four vessel carotid angiography is usually done by injecting dye into: Femoral aery', 'role': 'assistant'}]