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

Which of the following classes is one valid superclass of 'heme oxidation'?

A. (1,4)-alpha-D-glucan 1-alpha-D-glucosylmutase activity
B. heme metabolic process
C. 2-aminobenzenesulfonate metabolic process
D. 11alpha-30-dihydroxy beta-amyrin dehydrogenase activity

Answer: heme metabolic process