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

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

A. equivalent yield calculation method
B. prepayment speed
C. pool factor
D. credit spread

Answer: pool factor