这道题怎么理解，解释一下

问题如下：

选项：

Which of the following is a major criticism of CRAs?

A.

Excessive transparency in rating methodologies

B.

Conflicts of interest due to revenue reliance on rated entities

C.

Restricting debt market expansion

D.

Accurately predicting all corporate defaults

解释：

The material highlights that CRAs’ revenue depends on fees from entities they rate, creating potential conflicts of interest.