Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Using the effective interest rate method, the reported interest expense of a bond issued at a premium will:
Option A:decrease over the term of the bond.
Option B:increase over the term of the bond.
Option C:remain unchanged over the term of the bond

Answer: A