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

Which of the following definitions best describes 'notional step period length'?

A. recurrence interval that is defined as the nth day of some calendar period (such as a calendar month), and a time direction (forward from the beginning of the month, or backwards from the end)
B. recurrence interval that is defined per a specific convention that determines how recurring days should be handled
C. recurrence interval defined via an explicit duration
D. recurrence interval indicating the frequency with which step changes occur, which is a multiple of the calculation period in the calculation schedule

Answer: recurrence interval indicating the frequency with which step changes occur, which is a multiple of the calculation period in the calculation schedule