Which of the following are correct regarding bonds? $($Select all that apply.$)$

Multiple select question.

They obligate the issuing company to repay the bonds when market interest rates decrease.

They obligate the issuing company to pay a specific amount.

They obligate the issuing company to repay the bonds when interest rates increase.

They obligate the issuing company to repay the bonds at a specific date.

They obligate the issuing company to pay an estimated amount.