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.
这里的yield是不是理解为coupon rate?
