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

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

A. contract principal
B. termination provision
C. extension provision
D. collateral agreement

Answer: contract principal