问题如下图：
选项：
A. 
B. 
C. 
解释：
老师，费雪方程式不是应该是乘的关系么？这里怎么直接用名义减inflation啦？
NO.PZ2018091701000020问题如下Baseon the following tableWhiCountry hthe highest reshort-term interest rates?Country Country Country B is correct.考点fault-free interest rates aneconomic growth.解析关于fault-free interest rates aneconomic growth 有2个结论1，higher trenreeconomic growth, higher refault-free interest rates. 2, G growth is more volatile, reinterest rates are higher.这道题就是考察这2个结论的，国家A和B都有很高的G增长率，7.5%-4.9%=2.6%， 6%-3.4%=2.6%。所以再看GP波动，很明显国家B的波动最高，所以选B。在我看来这个考点是short term nomininterest rate，只关注compensation for expecteinflation
NO.PZ2018091701000020问题如下Baseon the following tableWhiCountry hthe highest reshort-term interest rates?Country Country Country B is correct.考点fault-free interest rates aneconomic growth.解析关于fault-free interest rates aneconomic growth 有2个结论1，higher trenreeconomic growth, higher refault-free interest rates. 2, G growth is more volatile, reinterest rates are higher.这道题就是考察这2个结论的，国家A和B都有很高的G增长率，7.5%-4.9%=2.6%， 6%-3.4%=2.6%。所以再看GP波动，很明显国家B的波动最高，所以选B。请问G增长率和通胀率为什么可以直接加减？
NO.PZ2018091701000020问题如下 Baseon the following tableWhiCountry hthe highest reshort-term interest rates?Country Country Country B is correct.考点fault-free interest rates aneconomic growth.解析关于fault-free interest rates aneconomic growth 有2个结论1，higher trenreeconomic growth, higher refault-free interest rates. 2, G growth is more volatile, reinterest rates are higher.这道题就是考察这2个结论的，国家A和B都有很高的G增长率，7.5%-4.9%=2.6%， 6%-3.4%=2.6%。所以再看GP波动，很明显国家B的波动最高，所以选B。volatility不用减去吗？
NO.PZ2018091701000020 请问这个g growth是得看reg growth rate吗 我看答案好像是这个意思
NO.PZ2018091701000020 老师请问1. r和GPgrowth成正比，2. r和G growth volatility成正比 在框架图的哪里？完全没印象我再去看看
