This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lipids, Subject name: Biochemistry
Sphingomyelinase deficiency is characteristic of? 
Select and explain. 
A. Fabry's disease, B. Krabbe's disease, C. Tay Sachs disease, D. Niemann Pick disease
D: Niemann Pick disease
Answer: D: Niemann Pick disease 
Explanation: Ans. D. Niemann Pick diseaseSphingomyelinase deficiency is seen in Niemann Pick disease. The enzymes deficient in the other disease are:a. Fabry disease - alpha galactosidaseb. Krabbe's disease - beta galactosidasec. Tay Sachs disease - Hexosaminidase A