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

Which of the following classes does 'XNAS-listed Alphabet Inc. class A common stock' belong to as one valid explicit type? Context: Alphabet Inc. class A common share listed in the Nasdaq (NASDAQ-NGS)

A. entity legal form registry entry
B. legal entity identifier registry entry
C. ABA RTN registry entry
D. listing

Answer: listing