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

Which of the following classes does 'NYSE American Options as service provider' belong to as one valid explicit type? Context: NYSE (New York Stock Exchange) American Options functional entity that operates an options trading platform under the name AMEX options exchange, facilitating trading of options on domestic stocks; American depository receipts; broad-based, industry sector, and international indexes; exchange traded funds; HOLDRS; LEAPS; and equity and index FLEX options

A. auditor
B. tribal government
C. merchant
D. financial service provider

Answer: financial service provider