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': 'On fundoscopic examination of a patient of giant cell aeritis, who has had history of sudden & painless loss of vision two days back, the surgeon finds orange reflex. He also notices segmentation of blood column in vessels. These vessels are - & patient had suffered from- \nSelect and explain. \nA. Retinal aeries & Central Retinal Aery occlusion, B. Retinal veins & CRAO, C. Retinal veins & CRVO, D. Retinal aeries & CRVO', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Retinal veins & CRAO', 'role': 'assistant'}]