Task: Property Constraint Reasoning (ontology: Earth_Environment/EnvironmentOntology)

The property 'interacts with' applies to instances of 'material entity', and 'chemical entity' is a subclass of 'material entity'. Which class can appear as the value of 'interacts with' for instances of 'chemical entity'?

A. material accumulation process
B. material entity
C. spatial region
D. multi-species collection of microbes

Answer: material entity