请问这道题到底选什么？ 选错的还是选对的啊 。

问题如下：

Question Which of the following statements concerning different types of market indexes is least accurate?

选项：

A.Commodity indexes are subject to different weighting methods for specific commodities. B.Equity indexes draw from a larger number of constituent securities than fixed-income indexes. C.Hedge fund indexes are subject to survivorship bias from voluntary reporting.

解释：

Solution

B is correct. The fixed-income universe includes securities issued by governments, government agencies, and corporations with a variety of types and characteristics. The number of fixed-income securities is many times larger than the number of equity securities.

C is incorrect. Most research organizations rely on the voluntary cooperation of hedge funds to compile performance data. As a result, hedge fund indexes are subject to survivorship bias from voluntary reporting.

A is incorrect. Commodity indexes do not have an obvious weighting mechanism, and index providers create their own weighting methods. As a result, commodity indexes are subject to different weighting methods for specific commodities.