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: Gynaecology & Obstetrics
[{'content': 'In cerebral angiography, dye is injected through: \nSelect and explain. \nA. Femoral aery, B. Brachial aery, C. Axillary aery, D. Radial aery', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Femoral aery', 'role': 'assistant'}]