Task: Inferred Instance Class Reasoning (ontology: Business_Finance/Financial_Industry_Business_Ontology)

After reasoning over the ontology, which class is one valid inferred class for the instance 'contract IY7VKEUR45886'? Context: contract IY7VKEUR45886 that is a fixed/float, single currency interest rate swap

A. cross-currency interest rate swap
B. fixed float interest rate swap
C. overnight index swap
D. fixed fixed interest rate swap

Answer: fixed float interest rate swap