Task: Inferred Instance Class Reasoning (ontology: Business_Finance/Financial_Industry_Business_Ontology)

After reasoning over the ontology, which class is one valid inferred class for the instance 'post office box designator'? Context: designator for a U.S. Post Office box

A. quantity kind
B. secondary unit designator
C. supplemental address designator
D. quantity dimension

Answer: supplemental address designator