Task: Text Categorization
Input (English): Question: Indicate which of the following deficits is an alteration of the mucopolysaccharide metabolism: 
 Options:  <0> Pyruvate kinase deficiency. <1> Deficiency of branching enzyme. <2> Sphingomyelinase deficiency. <3> N-acetylneuraminidase deficiency. <4> N-acetylglucosaminidase deficiency.
Output (English): pharmacology