NO.PZ201812020100001105
问题如下：
Which of Avelyn’s statements about the differences between investment-grade and high-yield bonds is accurate?
选项：
A.Statement 1
B.Statement 2
C.Statement 3
解释：
A is correct.
Investment-grade corporate bonds have meaningful interest rate sensitivity, and therefore, investment-grade portfolio managers usually manage their portfolio durations and yield curve exposures closely. In contrast, high-yield portfolio managers are more likely to focus on credit risk and less likely to focus on interest rate and yield curve dynamics. When default losses are low and credit spreads are relatively tight, however, high-yield bonds tend to behave more like investment-grade bonds—that is, with greater interest rate sensitivity.
statement1中说的是perform more like，但是在风险低的时候，high yield不是表现更好吗
