Task: Class Relation Understanding (ontology: Sciences/Biology)

Which of the following classes is one valid superclass of 'N,N'-diacetylbacillosaminyl-diphospho-undecaprenol alpha-1,3-N-acetylgalactosaminyltransferase activity'?

A. 2,4,6-trinitrotoluene catabolic process
B. hexosyltransferase activity
C. 2',3'-cyclic GMP-AMP synthase activity
D. 1-alkyl-2-acetylglycerophosphocholine esterase activity

Answer: hexosyltransferase activity