Task: Inferred Instance Class Reasoning (ontology: Business_Finance/Financial_Industry_Business_Ontology)

After reasoning over the ontology, which class is one valid inferred class for the instance 'DFLT'? Context: ISO 15022 classifier for corporate actions that indicate a failure by the issuer to perform obligations defined as default events under the bond agreement and that have not been remedied

A. action classifier
B. secondary unit designator
C. module
D. breach of covenant

Answer: action classifier