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

The property 'has original issue discount amount' applies to instances of 'bond', and 'step up bond' is a subclass of 'bond'. Which class can appear as the value of 'has original issue discount amount' for instances of 'step up bond'?

A. StepEvent
B. CouponSchedule
C. CouponPayment
D. monetary amount

Answer: monetary amount