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

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

A. response to chemical
B. role
C. vibrational conductance of sound to the inner ear
D. sexually immature stage

Answer: role