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

The property 'channel for' applies to instances of 'anatomical conduit', and 'central canal of spinal cord' is a subclass of 'anatomical conduit'. Which class can appear as the value of 'channel for' for instances of 'central canal of spinal cord'?

A. macromolecule localization
B. fourth instar larva stage
C. organism substance
D. sulcus dentalis of premaxilla

Answer: organism substance