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

Which of the following classes does 'BBG009S3NB21' belong to as one valid explicit type? Context: Financial Instrument Global Identifier (FIGI) for Alphabet Inc. class C common shares

A. Committee on Uniform Securities Identification Procedures (CUSIP) number
B. registration authority code
C. routing transit number
D. financial instrument global identifier

Answer: financial instrument global identifier