Task: Class Definition Understanding (ontology: Business_Finance/Financial_Industry_Business_Ontology)

Which of the following definitions best describes 'variable income security'?

A. tradeable debt instrument that provides a return in the form of fixed periodic payments and typically the return of principal at maturity
B. a provision of a put feature defining notification requirements
C. provision of a call feature defining notification requirements
D. tradeable debt instrument that provide their owners with a rate of return that is dynamic and determined by market forces

Answer: tradeable debt instrument that provide their owners with a rate of return that is dynamic and determined by market forces