This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
Cherry red spot is seen in all except - 
Select and explain. 
A. Niemann-Pick's disease, B. Tay-Sachs disease, C. Gaucher's disease, D. Sarcoidosis
D: Sarcoidosis
Answer: D: Sarcoidosis 
Explanation: Ans. is 'd' i.e., Sarcodosis Causes of cherry red soot o GM2 gangliosidoses (Tay sachs & sandhoff)o Hurler's syndromeo GM1 gangliosidoseso Cryoglobulinemiao Niemann - Pick's diseaseo Laber's congenital amaurosiso Gaucher's diseaseo Sialidosis (galactosialidosis)o Metachromatic leukodystrophyo Mucopolysacharidosis VIIo Central retinal artery occlusion (CRAO)o Multiple sulfatase deficiencyo Trauma (Berlin's edema / commotio retinae)o PoisoningCarbon mono-oxide, methanolo Quinine and Dapsoneo Shprintzen-Goldberg syndromeo Farber's diseaseo Hallervorden spatz diseaseo Goldberg's diseaseo Rarely in krabbe's disease