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

Which of the following classes does 'calendar month' belong to as one valid explicit type? Context: time interval resulting from the division of a calendar year in 12 time intervals, each with a specific name and containing a specific number of calendar days

A. calendar-specified interval
B. recurrence interval
C. calendar period
D. date time stamp

Answer: calendar period