这道题A是表达了什么意思？

问题如下：

Robbin points out that the Sharpe ratio and the information ratio are both useful tools in evaluating portfolio managers and asks Gladden to explain some of the important differences between the two.

Gladden notes, "The information ratio is a measure of relative expected or realized reward to risk whereas the Sharpe ratio measures the absolute risk-return trade-off of a portfolio. Sharpe ratios help investors focus on the relative value added by active management. Although the information ratio is not affected by the addition of cash or leverage, the Sharpe ratio is affected by the addition of either."

In his statement regarding the information and Sharpe ratios, Gladden is most likely correct with regard to:

选项：

the Sharpe ratio and relative value.

the impact of cash and leverage.

absolute versus relative return measures.

解释：

The information ratio is a measure of relative expected or realized reward to risk, whereas the Sharpe ratio measures the absolute risk–return trade-off of a portfolio.