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

The property 'is slice of' applies to instances of 'promissory note', and 'm b s tranche note' is a subclass of 'promissory note'. Which class can appear as the value of 'is slice of' for instances of 'm b s tranche note'?

A. residential m b s
B. mortgage-backed security
C. non agency m b s issuer
D. pass through m b s instrument

Answer: mortgage-backed security