A为什么不对

问题如下：

Wang uses a cost–benefit approach to rebalancing and recommends that global equities have a wider rebalancing range than the other asset classes.

Wang’s approach to rebalancing global equities is consistent with:

选项：

A.

the Wang’s being risk averse.

B.

global equities’ having higher transaction costs than other asset classes.

C.

global equities’ having lower correlations with other asset classes.

解释：

B is correct.

考点：影响rebalancing range的因素.

解析：rebalancing corridor width与以下因素正相关：交易成本、税收、风险容忍度、与其它资产类型的相关性。与以下因素负相关：自身的波动率，其它资产类型的波动率。

global equities有更宽的rebalancing range，所以可能的原因为：投资者风险容忍度高，交易成本偏高，与其它资产类型的相关性高。所以只有B正确。