NO.PZ2019070101000090
问题如下：
Which of the following bonds carries the highest reinvestment risk？
选项：
A.a 10-year bond with a coupon of 10% paid semiannually and a YTM of 7%.
B.a 10-year bond with a coupon of 6% paid semiannually and a YTM of 7%.
C.a 10-year zero coupon bond priced at 50.83.
D.they all have the same level of reinvestment risk.
解释：
A is correct
考点：Realized Return
对于相同到期期限和相同YTM的债券，coupon rate 越大，再投资风险越大。
强化讲义里，coupon effect: the low the coupon rate , the greater the interest rate risk. 我想问，既然利率风险都提高了，那在投资风险不是应该也提高么
