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

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

A. prepayment speed
B. debt securities market maker
C. credit spread
D. native yield calculation method

Answer: prepayment speed