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

Which of the following classes does 'Dow Jones Industrial Average basket - The Proctor & Gamble Company common stock date added' belong to as one valid explicit type? Context: individual representing the date that The Proctor & Gamble Company common stock was added to the DJIA

A. explicit date
B. rate reset time of day
C. proper interval
D. time direction

Answer: explicit date