Select most appropriate alternative from those given below :
___________debentures of which the amount is repaid written specific period.
Redeemable debentures of which the amount is repaid within specific period.
Explanation: Debentures, on which the amount is to be paid back after a specified period of time, as per the terms of the issue, are known as redeemable debentures. They can only be redeemed after the expiry of a specified time period.