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

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

A. rate basis convention
B. partial redemption allocation convention
C. monetary amount
D. CouponSchedule

Answer: monetary amount