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

Which of the following classes does 'BBG001S72ZG4' belong to as one valid explicit type? Context: Financial Instrument Global Identifier (FIGI) for Citigroup Inc. common shares

A. transaction record identifier
B. financial instrument global identifier
C. Euroclear Clearstream common code
D. account identifier

Answer: financial instrument global identifier