Task: Property Constraint Reasoning (ontology: Business_Finance/Financial_Industry_Business_Ontology)

The property 'has preferred settlement currency' applies to instances of 'settlement terms', and 'cash settlement terms' is a subclass of 'settlement terms'. Which class can appear as the value of 'has preferred settlement currency' for instances of 'cash settlement terms'?

A. delivery method
B. settlement convention
C. settlement
D. currency

Answer: currency