问题如下：
Which of the following statements regarding ESG implementation methods is most accurate?
选项：
A.Negative screening is the most commonly applied method.
B.Thematic investing considers multiple factors.
C.Relative/best-in-class screening excludes industries with unfavorable ESG aspects.
解释：
A is correct.
Negative screening, which refers to the practice of excluding certain sectors or companies that violate accepted standards in such areas as human rights or environmental concerns, is the most common ESG investment strategy (implementation method).
Positve screening也是Best-in-class吗？我看之前有老师这么解答的
