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

Which of the following definitions best describes the instance 'market-level classifier - OPRT'?

A. market category classifier for an alternative trading system
B. market-level classifier for an operating-level facility
C. as of the last report or update, the exchange code has expired
D. market-level classifier for a segment-level facility

Answer: market-level classifier for an operating-level facility