问题如下：
Which of the following is most appropriate for measuring a bond’s sensitivity to shaping risk?
选项：
A.key rate duration
B.effective duration
C.modified duration
解释：
A is correct.
Key rate duration is used to measure a bond’s sensitivity to a shift at one or more maturity segments of the yield curve which result in a change to yield curve shape. Modified and effective duration measure a bond’s sensitivity to parallel shifts in the entire curve.
KEY RATE在哪里讲到的啊
