题目和答案C究竟应该怎么理解？

问题如下：

ESG rating providers oversimplifying industry weighting and company alignment best describes:

选项：

A.geographical bias. B.company size bias. C.industry and sector bias.

解释：

A. Incorrect because it describes industry and sector bias, not geographical bias, where a geographical bias exists toward companies in regions with high reporting requirements or some other cultural factor (e.g., higher unionization levels in Europe).

B. Incorrect because it describes industry and sector bias, not company size bias, where larger companies might obtain higher ratings because of the ability to dedicate more resources to nonfinancial disclosures.

C. Correct because one key type of bias typically encountered is industry and sector bias, where rating providers oversimplify industry weighting and company alignment.