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

Which of the following classes does 'SEDOL Master File' belong to as one valid explicit type? Context: repository of security identifiers, issued by the London Stock Exchange, that is the National Securities Identifying Number (NSIN) for securities issued in the United Kingdom, which is also part of the ISIN for the security it identifies

A. business registry
B. entity legal form registry
C. National Securities Identifying Number registry
D. transaction record

Answer: National Securities Identifying Number registry