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 'monthly'? Context: explicit recurrence interval of exactly one (1) month, regardless of the length in days of a given calendar month, but typically 30 days

A. date period
B. time period
C. recurrence interval
D. duration

Answer: recurrence interval