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

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

A. duration analytic
B. prepayment speed
C. equivalent yield calculation method
D. pool factor

Answer: prepayment speed