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

Which of the following definitions best describes 'calendar period'?

A. time span over some finite window
B. time interval that is consistent between elements of a regular schedule
C. time interval that occurs within a system that fixes the beginning and length of a segment of the year with respect to that system
D. interval of time of some specific length

Answer: time interval that occurs within a system that fixes the beginning and length of a segment of the year with respect to that system