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': 'Vortex Vein invasion is commonly seen in – \nSelect and explain. \nA. Retinoblastoma, B. Malignant melanoma, C. Optic nerve gliomas, D. Medullo–epitheliomas', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Vortex vein involvement is seen in uveal malignant melanoma.', 'role': 'assistant'}]