课本或者讲义哪里提到portfolio guideline

问题如下：

Portfolio guidelines most likely focus on:

选项：

A.ESG investment beliefs only.

B.expected investment returns only.

C.both ESG investment beliefs and expected investment returns.

解释：

C is correct because once the asset owner client has developed its investment philosophy and beliefs, the client will always have an expectation of investment returns being generated alongside delivery of whatever broader expectations it places on the investment approach.