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

The property 'has default rate' applies to instances of 'debt pool', and 'cash a b s pool' is a subclass of 'debt pool'. Which class can appear as the value of 'has default rate' for instances of 'cash a b s pool'?

A. default rate
B. credit spread
C. prepayment speed
D. equivalent yield calculation method

Answer: default rate