NO.PZ2021120102000010
问题如下：
Which of the followingstatements best describes empirical duration?
选项：
A. A common way to calculate a bond’s empirical duration is to run aregression of its price returns on changes in a benchmark interest rate.
B. A bond’s empirical duration tends to be larger than its effective duration.
C. The price sensitivity of high-yield bonds to interest rate changes is typically higher than that of investment-grade bonds
解释：
Ais correct. A bond’s empirical duration is often estimated by running aregression of its price returns on changes in a benchmark interest rate.
请细化讲解一下，谢谢
