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

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

A. rate basis convention
B. monetary amount
C. CouponPayment
D. municipal debt funds usage

Answer: monetary amount