问题如下：
Which of the following description about bonds with embedded option is most appropriate?
选项：
A.Putable bonds will have a lower yield than the similar straight bonds.
B.Callable bonds will be more expensive than the similar straight bonds.
C.Convertible bonds will have lower price than the similar straight bonds.
解释：
A is correct.
Putable bonds are beneficial to the bondholders. They usually have a lower yield and higher price than the similar straight bonds.
为什么lower yield？是因为price高，面值和CF相同的情况下收益率相对低吗？
