请讲述分析一下这道题。。。

问题如下：

According to the Brunel Asset Management Accord, which of the following is of limited significance in evaluating asset managers?

选项：

A.Short-term underperformance by an asset manager

B.Loss of key personnel in an asset management firm

C.Change in the investment style of an asset manager

解释：

A is correctbecause the document emphasises that short-term underperformance is not initself likely to give rise to undue concern for the client. Investmentperformance, particularly in the short term, will be of limited significance inevaluating the Manager.

B is incorrectbecause issues that it identifies as likely to give rise to concerns includethe loss of key personnel.

C is incorrectbecause issues that it identifies as likely to give rise to concerns include achange in investment style.