老师您好！我在做“模拟考试”板块的“第6~9章习题”，遇到以下题目，答案是选A。我觉得答案错了，应该选B。因为之前视频课讲的是ESG integration是有利于分散化diversification的，所以A选项是错的；而B选项ESG投资策略面临数据等诸多挑战和问题。
Which of the following is incorrect about full ESG integration?
A. Portfolios tend to be more diversified
B. ESG investment strategies often face fewer constraints
C. The strategy often combines quantitative approaches in order to exploit ESG datasets alongside fundamental tactics
