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': 'In retinal aery angiogram, the dye is injected through the: \nSelect and explain. \nA. Peripheral veins, B. Aoa, C. Retinal aery, D. Retinal vein', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Peripheral veins', 'role': 'assistant'}]