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': 'Shower of golden rain appearance in synchisis scintillans is due to \nSelect and explain. \nA. Calcium bodies, B. Cholesterol crystals, C. Iron deposition, D. Copper deposition', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Shower of golden rain is due to cholestrol crytals in vitreous cavity.', 'role': 'assistant'}]