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

The property 'has trading date time' applies to instances of 'security price', and 'market price' is a subclass of 'security price'. Which class can appear as the value of 'has trading date time' for instances of 'market price'?

A. closing price determination method
B. composite market
C. price determination method
D. date time

Answer: date time