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

The property 'directly supplies and drains' applies to instances of 'capillary', and 'capillary of colon' is a subclass of 'capillary'. Which class can appear as the value of 'directly supplies and drains' for instances of 'capillary of colon'?

A. appendage development
B. anatomical structure
C. maintenance of cell number
D. regulation of reproductive process

Answer: anatomical structure