问题如下图：
选项：
A. 
B. 
C. 
解释：
请问为什么coupon越大，期限越短，价格变动越小？
NO.PZ2016031001000059 问题如下 Whibonwill most likely experienthe smallest percent change in priif the market scount rates for all three bon increase 100 basis points? A.Bon B.Bon C.Bon B is correct.BonB will most likely experienthe smallest percent change in priif market scount rates increase 100 basis points. A higher-coupon bonha smaller percentage prichange tha lower-coupon bonwhen their market scount rates change the same amount (the coupon effect). Also, a shorter-term bongenerally ha smaller percentage prichange tha longer-term bonwhen their market scount rates change the same amount (the maturity effect). BonB will experiena smaller percent change in prithBonA because of the coupon effect. BonB will also experiena smaller percent change in prithBonC because of the coupon effeanthe maturity effect.考点maturity effe coupon effect解析maturity effect表明，对于coupon rate一样的债券，maturity较大的债券，其价格改变较大，在债券A和C中，我们排除C。coupon effect表明，对于maturity一样的债券，coupon rate较小的债券，其价格改变较大，在债券A和B中，排除A。故B正确。 请教如何用YTM的公式，判断coupon rate的影响
NO.PZ2016031001000059 BonB BonC B is correct. BonB will most likely experienthe smallest percent change in priif market scount rates increase 100 basis points. A higher-coupon bonha smaller percentage prichange tha lower-coupon bonwhen their market scount rates change the same amount (the coupon effect). Also, a shorter-term bongenerally ha smaller percentage prichange tha longer-term bonwhen their market scount rates change the same amount (the maturity effect). BonB will experiena smaller percent change in prithBonA because of the coupon effect. BonB will also experiena smaller percent change in prithBonC because of the coupon effeanthe maturity effect.请问这个题目怎么求ration呢？计算器可以吗？还是要现金流一笔笔算Macaulration，再➗（1➕ytm）得到mofieration？
B 和 C 的利率并不相等，如何比较 maturity？
这题140页的知识点老师视频当时说学过后面的回头讲的啊，这章学完了也没讲啊，不知道讲解是不是还在后面
老师这道题在讲义第几页啊
