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

The property 'has transaction party' applies to instances of 'economic transaction', and 'contractual transaction' is a subclass of 'economic transaction'. Which class can appear as the value of 'has transaction party' for instances of 'contractual transaction'?

A. covered transaction
B. discharging event
C. transaction undertaking
D. transaction party

Answer: transaction party