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. RSSD identifier'? Context: research statistics supervision discount identifier (RSSD ID), assigned by the Federal Reserve to Citigroup Inc.

A. precious metal identifier
B. contextual name
C. business day adjustment code
D. financial service provider identifier

Answer: financial service provider identifier