选项B为什么不对呢？

问题如下：

Which of the following statements regarding fixed-income indices is most accurate?

选项：

A.

Liquidity issues make it difficult for investors to easily replicate fixed-income indices

B.

Rebalancing and reconstitution are the only sources of turnover in fixed-income indices

C.

Fixed-income indices representing the same target market hold similar numbers of bonds

解释：

The large number of fixed-income securities—combined with the lack of liquidity of some securities—makes it costly and difficult for investors to replicate fixed-income indices