Task: Property Constraint Reasoning (ontology: Sciences/Biology)

The property 'composed primarily of' applies to instances of 'material entity', and 'cellular component' is a subclass of 'material entity'. Which class can appear as the value of 'composed primarily of' for instances of 'cellular component'?

A. allergen
B. bona-fide anatomical boundary
C. material entity
D. astringent

Answer: material entity