问题如下：
A bond's sensitivity to shaping risk is best measured by:
选项：
A.partial duration
B.portfolio duration
C.money duration
解释：
A is correct.
Partial duration, also known as key rate duration, measures a bond's sensitivity to a change in the benchmark yield curve at a specific maturity segment. It is a useful tool for measuring the effect of nonparallel shift in the yield curve, while portfolio and money duration can only measure the effect of parallel shift.
老师，shaping rate这个在哪里讲到的？是不是不是durantion的？
