怎么理解

问题如下：

With respect to ESG data and research providers, the level of automation is low or medium in the approaches used by:

选项：

A.traditional providers only.

B.nontraditional providers only.

C.both traditional providers and nontraditional providers.

解释：

A. Incorrect because the level of automation is low or medium in the approach of nontraditional ESG data and research providers as well. In the case of nontraditional providers, the level of automation is low or medium because human judgment is still used.

B. Incorrect because the level of automation is low or medium in the approach of traditional ESG data and research providers as well. In the case of traditional providers, the level of automation is low or medium because human judgment is still used.

C. Correct because traditional ESG data and research providers were founded from the socially responsible investing industry to provide investors with sustainability data and ratings on primarily large, publicly traded companies. These companies feature a level of automation that is low or medium because human judgment is still used. Similarly, in the case of nontraditional ESG data and research providers, the level of automation is low or medium because human judgment is still used.