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

The property 'has 2D boundary' applies to instances of 'material entity', and 'material anatomical entity' is a subclass of 'material entity'. Which class can appear as the value of 'has 2D boundary' for instances of 'material anatomical entity'?

A. immaterial entity
B. Viridiplantae
C. antagonist
D. pharmaceutical

Answer: immaterial entity