问题如下：
Wang, a junior analyst in a wealth management firm, made the following statements about the differences between high-yield bond markets and the investment-grade bond markets：
Statement 1: Both high-yield bonds and investment-grade bonds are quoted as spreads over the benchmark government bonds.
Statement 2: compared with the high-yield bond, bid-ask spread for the investment-grade bonds are often lower.
Statement 3: for the high-yield bonds, the interest rate sensitivity is lower than that of the investment-grade bonds.
According to the information above, which of the following is correct?
选项：
A.Statement 1 and statement 2 are correct.
B.Statement 2 and statement 3 are correct.
C.All the statements are correct.
解释：
B is correct.
考点：High-yield bond和Investment-grade相关概念
解析：三个Statements中，第一个错误，Investment-grade bond的报价是基于benchmark的Spread，而对于High-yield bond报价通常是价格。
interest rate sensitive 是什么？为什么都没有在讲义里见过，可以说一下在讲义哪里嘛？
