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 'Citigroup Inc. incorporation date'? Context: date that Citigroup Inc. was first registered as a corporation in the State of Delaware

A. date time stamp
B. time of day
C. date
D. date time

Answer: date