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 'Clearstream Banking'? Context: Clearstream functional entity, which is an international central securities depository (ICSD) based in Luxembourg, providing post-trade infrastructure and securities services for the international market and 56 domestic markets worldwide

A. clearing house
B. foreign banking organization
C. savings loan holding company
D. mortgage company

Answer: clearing house