Doni Corp has a bond issue that is guaranteed by the pledge of the company's total PP&E. Doni can choose to redeem the bonds at any point in time prior to maturity and the bonds will only pay interest if Doni Corp is profitable. The bonds are correctly classified as

Select one:

Unsecured, callable, revenue bonds

Secured, callable, income bonds

Secured, asset-backed, income bonds

Unsecured, commodity-backed, income bonds

Secured, registered, revenue bonds