Task: Instance Class Understanding (ontology: Business_Finance/Financial_Industry_Business_Ontology)

Which of the following classes does 'ISO 15022 corporate action classification scheme' belong to as one valid explicit type? Context: scheme for classifying corporate actions according to ISO 15022 Securities - Scheme for Messages (Data Field Dictionary)

A. constitution
B. action classification scheme
C. business identifier code scheme
D. financial record

Answer: action classification scheme