This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Phospholipids, Glycolipids and their disorders, Subject name: Biochemistry
Metachromatic leukodystrophy is due to deficiency of - 
Select and explain. 
A. Hexosaminidase A, B. Hexosaminidase B, C. Ceramidase, D. Arylsulfatase
D: Arylsulfatase
Answer: D: Arylsulfatase 
Explanation: Ans. is 'd' i.e., Arylsulfatase Disease Enzy me deficiencyLipid accumulated Tay-sach diseaseHexosaminidase AGM2 gangliosideSandoff diseaseHexosaminidase BGM2 gangliosideNiemann-Pick diseaseSphingomyelinaseSphingomyelineFarber's diseaseCeramidaseAcyl-sphingosine (ceramide)Fabry's diseasea-galactosidaseGlobotrisylceramideKrabbe's diseaseb-galactosidase (Galactosy lcerami dase)Galactosy lcerami deGaucher's diseaseb-glucosidase (glucocerebrosidase)GlucosylceramideMetachromatic leukodystrophyAry lsulfatase A3-Sulfogalactosylceramide