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

The property 'calculation following' applies to instances of 'debt instrument yield', and 'debt yield to equivalent life' is a subclass of 'debt instrument yield'. Which class can appear as the value of 'calculation following' for instances of 'debt yield to equivalent life'?

A. debt convexity analytic
B. loan prepayment formula
C. japanese compound yield calculation method
D. yield calculation method

Answer: yield calculation method