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

Which of the following classes does 'CUSIP International Numbering System (CINS) scheme' belong to as one valid explicit type? Context: security identification scheme that extends the CUSIP scheme, used to identify securities outside of the United States and Canada for the purposes of facilitating clearing and settlement of trades

A. financial service provider identifier scheme
B. proprietary security identification scheme
C. national security identification scheme
D. code set

Answer: proprietary security identification scheme