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

The property 'has volume' applies to instances of 'geometrical object 3d', and 'ring' is a subclass of 'geometrical object 3d'. Which class can appear as the value of 'has volume' for instances of 'ring'?

A. Pyrantimonite
B. Morenosite
C. Oellacherite
D. volume

Answer: volume