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

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

A. infant stage
B. role
C. Evosea
D. alpha-amino-acid residue

Answer: role