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

The property 'is guaranteed by' applies to instances of 'guaranty', and 'insurance-backed guaranty' is a subclass of 'guaranty'. Which class can appear as the value of 'is guaranteed by' for instances of 'insurance-backed guaranty'?

A. insurance policy
B. letter of credit guaranty
C. priority level
D. guarantor

Answer: guarantor