问题如下：
One month after inception, the price return version and total return version of a single index (consisting of identical securities and weights) will be equal if:
选项：
A.market prices have not changed.
B.capital gains are offset by capital losses.
C.the securities do not pay dividends or interest.
解释：
C is correct.
The difference between a price return index and a total return index consisting of identical securities and weights is the income generated over time by the underlying securities. If the securities in the index do not generate income, both indices will be identical in value.
请问老师，b选项为什么不对？谢谢
