Task: Property Constraint Reasoning (ontology: Business_Finance/Financial_Industry_Business_Ontology)

The property 'has primary holder' applies to instances of 'tranched m b s instrument', and 'residual tranche' is a subclass of 'tranched m b s instrument'. Which class can appear as the value of 'has primary holder' for instances of 'residual tranche'?

A. non agency pool creation end
B. m b s securitization start
C. m b s securitization end
D. primary investor

Answer: primary investor