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

The property 'has role' applies to instances of 'independent continuant', and 'adenosine' is a subclass of 'independent continuant'. Which class can appear as the value of 'has role' for instances of 'adenosine'?

A. cellular detoxification
B. monoatomic entity
C. role
D. developing anatomical structure

Answer: role