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

The property 'directly negatively regulates activity of' applies to instances of 'material entity', and 'processed material' is a subclass of 'material entity'. Which class can appear as the value of 'directly negatively regulates activity of' for instances of 'processed material'?

A. Graph plot
B. datum label
C. specimen role
D. material entity

Answer: material entity