每一个选项到底哪里错了

问题如下：

Identify the accurate statement concerning the GIPS standards.

选项：

A.Every portfolio that pays fees must be part of at least one composite group.

B.Portfolios sharing identical investment objectives are grouped together into a single composite.

C.The grouping of portfolios into composites is determined annually based on their real performance.

解释：

Option B is correct. As per GIPS standards, a composite refers to the collective grouping of multiple portfolios that are managed under a uniform investment mandate, goal, or approach.