问题如下：
Confabulated’s reported interest income would be lower if the cost was the same but the par value (in € thousands) of:
选项：
A.Bugle was €28,000.
B.Cathay was €37,000.
C.Dumas was €55,000.
解释：
B is correct.
The difference between historical cost and par value must be amortized under the effective interest method. If the par value is less than the initial cost (stated interest rate is greater than the effective rate), the interest income would be lower than the interest received because of amortization of the premium.
考点：债券的摊销
解析：题目问，如果债券的成本（initial cost）不变，面值怎样变化，interest income会变小。
现在是平价发行，债券interest income=coupon。
当cost与par不相等时，债券应按照effective interest method进行摊销。
如果initial cost>par value，即par变小：溢价发行，票面利率大于市场利率，interest income < coupon。
如果initial cost
因此，变成溢价发行的债券，int income会变小。只有选项B是溢价发行，其他都是折价发行。
老师请问，如何理解当溢价发行时，coupon>int income? 折价发行时，coupon
