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

After reasoning, which of the following classes is one valid superclass of 'protein-N(PI)-phosphohistidine-sucrose phosphotransferase system transporter activity'?

A. obsolete acriflavine transport
B. catalytic activity
C. maltose:proton symporter activity
D. obsolete modulation by organism of pathogen-associated molecular pattern-induced symbiont innate immunity

Answer: catalytic activity