Task: Instance Class Understanding (ontology: Business_Finance/Financial_Industry_Business_Ontology)

Which of the following classes does 'highway contract route designator' belong to as one valid explicit type? Context: designator for a route served by an independent contractor rather than directly by the U.S. Postal Service

A. secondary unit
B. street suffix
C. occurrence kind
D. supplemental address designator

Answer: supplemental address designator