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

The property 'has funding source' applies to instances of 'municipal security', and 'certificate of obligation' is a subclass of 'municipal security'. Which class can appear as the value of 'has funding source' for instances of 'certificate of obligation'?

A. bond insurance
B. RegularCouponSchedule
C. CouponPayment
D. municipal debt source of funds

Answer: municipal debt source of funds