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

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

A. duration analytic
B. credit spread
C. pool factor
D. prepayment speed

Answer: pool factor