Task: SWRL-based Rule Reasoning (ontology: Business_Finance/Financial_Industry_Business_Ontology)

Suppose an individual ?x satisfies: tradable debt instrument(?x). Which conclusion is one valid inferred conclusion?

A. credit agreement repaid at maturity(?x)
B. non-tradable debt instrument(?x)
C. security(?x)
D. debt instrument(?x)

Answer: debt instrument(?x)