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

After reasoning, which of the following classes is one valid superclass of 'histone H3T6 kinase activity'?

A. 2-deoxystreptamine N-acetyl-D-glucosaminyltransferase activity
B. obsolete positive regulation of mRNA 3'-UTR binding
C. catalytic activity
D. obsolete negative regulation of methionine-tRNA ligase activity

Answer: catalytic activity