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: Biochemistry
Nieman pick disease is due to deficiency of - 
Select and explain. 
A. Sphingomyelinase, B. Ceramidase, C. Galactosidase, D. Glucosidase
A: Sphingomyelinase
Answer: A: Sphingomyelinase 
Explanation: Ans. is 'a' i.e., Sphingomyelinase