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': 'Sunset sign is seen in \nSelect and explain. \nA. Optic neuritis, B. Hydrocephalus, C. Thyroid ophthalmopathy, D. Orbital cellulitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. HydrocephalusSun set sign: The scleraa revisible between theupper eyelid and their is, Sun setting sign is seen usually in hydrocephalus due to loss of upward conjugate gaze caused by raised intracranial pressure (ICP).', 'role': 'assistant'}]