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 'Dow Jones Industrial Average basket - The Proctor & Gamble Company common stock date added'? Context: individual representing the date that The Proctor & Gamble Company common stock was added to the DJIA

A. date time stamp
B. time of day
C. date
D. date time

Answer: date