Task: Inferred Class Relation Reasoning (ontology: Sciences/Biology)

After reasoning, which of the following classes is one valid superclass of '4-acetamidobutyrate deacetylase activity'?

A. catalytic activity
B. mitochondrial small ribosomal subunit
C. 1,1,1-trichloro-2,2-bis-(4-chlorophenyl)ethane metabolic process
D. positive regulation of G1 to G0 transition

Answer: catalytic activity