Which of the following is correct about the effective-interest method of amortization?
A.
The effective-interest method applied to investments in debt securities is different from that applied to bonds payable.
B.
Amortization of a discount decreases from period to period.
C.
Amortization of a premium decreases from period to period.
D.
It must be used to amortize a discount or premium unless some other method yields a similar result.