Task: Inferred Instance Class Reasoning (ontology: Business_Finance/Financial_Industry_Business_Ontology)

After reasoning over the ontology, which class is one valid inferred class for the instance 'Chicago Board Options Exchange'? Context: Chicago Board Options Exchange operating-level market founded in 1973 that is the world's largest options market with contracts focusing on individual equities, indexes, and interest rates

A. exchange
B. trade reporting facility
C. office of a foreign bank
D. representative office of a foreign bank

Answer: exchange