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

The property 'refers to' applies to instances of 'underwriting issuance closing', and 'debt underwriting closing' is a subclass of 'underwriting issuance closing'. Which class can appear as the value of 'refers to' for instances of 'debt underwriting closing'?

A. process participant
B. equity underwriting issuance process
C. debt issue over allotment terms
D. underwriter takedown

Answer: underwriter takedown