A bond manager who is responsible for immunizing a financial liability with financial assets is most likely engaging in

[answerhappygod]

A bond manager who is responsible for immunizing a financial
liability with financial assets is most likely engaging in which of
the investment strategies below?
Group of answer choices
Buying a non-financial asset with the same duration as the
financial liability
Buying a fixed income asset with the same duration as the
financial liability's duration
Swapping the financial liability for a non-financial
liability
Buying those risk-free assets with the lowest yield