c说会反转啊。而且forward rate大于spot rate. a还是等于spot rate，感觉不是向上的收益率曲线。问题如下图：
选项：
A. 
B. 
C. 
解释：
吴昊_品职助教 · 2019年05月02日
原文中Country A: “The government yield curve has changed little in terms of its level and shape during the last few years, and I expect this trend to continue. We assume that future spot rates reflect the current forward curve for all maturities.”未来时间段内，A国家的收益率曲线和当前时刻是一样的，不会发生变化，满足Yield curve stable的条件。再根据Exhibit 1，A国家的收益率曲线是长期的利率更高，即Upward-sloping，满足第一个条件。所以A国家满足做Riding the yield curve的两个条件，即选A。
C国现在是向下倾斜的，但是Country C后半句：We assume that future spot rates will be lower than current forward rates for all maturities.这句话就说明收益率曲线不满足yield curve stable的条件了。
blue · 2020年04月12日
为什么“Country C后半句：We assume that future spot rates will be lower than current forward rates for all maturities.这句话就说明收益率曲线不满足yield curve stable的条件了”？这句话和stable有关吗？麻烦再讲解一下
NO.PZ2018123101000041 问题如下 Exhibit 1 shows the current government spot rates for Countries anC.Tyo presents her market views on the respective yielcurves for a five-yeinvestment horizon.Country The government yielcurve hchangelittle in terms of its level anshape ring the last few years, anI expethis trento continue. We assume thfuture spot rates reflethe current forwarcurve for all maturities.Country Because of recent economic tren, I expea reversin the slope of the current yielcurve. We assume thfuture spot rates will higher thcurrent forwarrates for all maturities.Country To improve liquity, Country C’s centrbank is expecteto intervene, leang to a reversin the slope of the existing yielcurve. We assume thfuture spot rates will lower thtoy’s forwarrates for all maturities.Baseon Exhibit 1 anTyo’s expectations, whicountry’s term structure is currently best for trars seeking to ri the yielcurve? A.Country B.Country C.Country A is correct.考点Ring the yielcurve策略解析由表格数据可知，A国利率曲线当前状态是向上倾斜的，且Tyo预期未来5年保持不变，这样的收益率曲线预期适合Ring the yielcurve策略。使用Ring the yielcurve需要满足收益率曲线向上倾斜，且收益率曲线预期不变，只有A国的收益率曲线满足该要求。 看了之前的，老师只一句话C最后一句不对，我还是不明白。请老师展开，并详细对比A和C的不同之处。C未来收益率曲线会反转向上啊，为啥C不对呢？
NO.PZ2018123101000041 问题如下 Exhibit 1 shows the current government spot rates for Countries anC.Tyo presents her market views on the respective yielcurves for a five-yeinvestment horizon.Country The government yielcurve hchangelittle in terms of its level anshape ring the last few years, anI expethis trento continue. We assume thfuture spot rates reflethe current forwarcurve for all maturities.Country Because of recent economic tren, I expea reversin the slope of the current yielcurve. We assume thfuture spot rates will higher thcurrent forwarrates for all maturities.Country To improve liquity, Country C’s centrbank is expecteto intervene, leang to a reversin the slope of the existing yielcurve. We assume thfuture spot rates will lower thtoy’s forwarrates for all maturities.Baseon Exhibit 1 anTyo’s expectations, whicountry’s term structure is currently best for trars seeking to ri the yielcurve? A.Country B.Country C.Country A is correct.考点Ring the yielcurve策略解析由表格数据可知，A国利率曲线当前状态是向上倾斜的，且Tyo预期未来5年保持不变，这样的收益率曲线预期适合Ring the yielcurve策略。使用Ring the yielcurve需要满足收益率曲线向上倾斜，且收益率曲线预期不变，只有A国的收益率曲线满足该要求。 老师，这道题出现过一次，我印象答案是选择B的。是不是有区别？上一道选B的也不是特别明白。麻烦讲解下。谢谢
为什么不选 B 呢？
c不是说会reversal吗。而且forwarrate大于spot rate。a里还是等于spot rate，感觉不是向上的收益率曲线。