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

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

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

Answer: monetary amount