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

Which of the following classes does 'American Express network' belong to as one valid explicit type? Context: credit card network and card issuer that both issues credit cards and processes payments for cards bearing its logo, as well as offering cardholder benefits like travel insurance

A. relationship qualifier
B. credit card network
C. relationship period qualifier
D. ownership interest

Answer: credit card network