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

The property 'is linked to fallback' applies to instances of 'financial instrument', and 'spot contract' is a subclass of 'financial instrument'. Which class can appear as the value of 'is linked to fallback' for instances of 'spot contract'?

A. government bond
B. convertible bond
C. bullet bond
D. U.K. Government security

Answer: government bond