NO.PZ2023090201000123
问题如下：
Which of the following duration statistics best measures the sensitivity of a bond’s price to a flattening of the yield curve?
选项：
A.Key rate duration
B.Effective duration
C.Modified duration
解释：
A is correct.
The key rate duration (or partial duration) is a measure of a bond’s sensitivity to a change in the benchmark yield curve at a specific maturity segment. Key rate durations help identify 'shaping risk' for a bond—that is, a bond’s sensitivity to changes in the shape of the benchmark yield curve.
考点：Key rate duration
解析：Modified duration和Effective duration关注的是收益率曲线整体的平行移动；而Key rate duration关注收益率曲线形状发生变化。收益率曲线变平（flatten）属于收益率曲线形状发生变化，需要用key rate duration来衡量，故选项A正确。
感觉不像是重点，属于一笔带过的那种
