问题如下图：
选项：
A. 
B. 
C. 
解释：
请问B选项该怎么理解？nominal yield spread与汇率的关系是怎样的？
NO.PZ2018091706000061问题如下 Assumeththe country hwhis consirea low-yielsafe haven currenwhilethe EM country ha high-yielcurrenwhose value is more exposetofluctuations in the globeconomic growth rate. All else equal, the exchangerate for the EM currenwill most likely preciate if the: A.long-run equilibriumvalue of the high-yielcurrenis reviseupwarB.nominyielspreaetween the EM an countries increases over time C.expecteinflationfferentibetween the EM an countries is reviseupwarAllelse equal, increase in the expecteinflation fferentishoulletopreciation of the EM currency.解析reexchange rate (A/= equilibriumreexchange rate + (realinterest rate B - reinterest rate A)- (risk premium B - risk premium A)根据上述公式。所以A、B错误。在其它条件相同的情况下，预期通胀率的扩大会加两国的风险溢价之差，从而应会导致新兴市场货币贬值。所以C正确。请问B为什么错？
NO.PZ2018091706000061问题如下 Assumeththe country hwhis consirea low-yielsafe haven currenwhilethe EM country ha high-yielcurrenwhose value is more exposetofluctuations in the globeconomic growth rate. All else equal, the exchangerate for the EM currenwill most likely preciate if the: A.long-run equilibriumvalue of the high-yielcurrenis reviseupwarB.nominyielspreaetween the EM an countries increases over time C.expecteinflationfferentibetween the EM an countries is reviseupwarAllelse equal, increase in the expecteinflation fferentishoulletopreciation of the EM currency.解析reexchange rate (A/= equilibriumreexchange rate + (realinterest rate B - reinterest rate A)- (risk premium B - risk premium A)根据上述公式。所以A、B错误。在其它条件相同的情况下，预期通胀率的扩大会加两国的风险溢价之差，从而应会导致新兴市场货币贬值。所以C正确。如图所示，老师帮忙看看是不是这样理解
NO.PZ2018091706000061问题如下 Assumeththe country hwhis consirea low-yielsafe haven currenwhilethe EM country ha high-yielcurrenwhose value is more exposetofluctuations in the globeconomic growth rate. All else equal, the exchangerate for the EM currenwill most likely preciate if the: A.long-run equilibriumvalue of the high-yielcurrenis reviseupwarB.nominyielspreaetween the EM an countries increases over time C.expecteinflationfferentibetween the EM an countries is reviseupwarAllelse equal, increase in the expecteinflation fferentishoulletopreciation of the EM currency.解析reexchange rate (A/= equilibriumreexchange rate + (realinterest rate B - reinterest rate A)- (risk premium B - risk premium A)根据上述公式。所以A、B错误。在其它条件相同的情况下，预期通胀率的扩大会加两国的风险溢价之差，从而应会导致新兴市场货币贬值。所以C正确。b为什么不对 名义利率差距增大说明通胀率差距增大因为根据fisher的公式实际利率是相同的。那么b和c不是一个意思吗？
NO.PZ2018091706000061 问题如下 Assumeththe country hwhis consirea low-yielsafe haven currenwhilethe EM country ha high-yielcurrenwhose value is more exposetofluctuations in the globeconomic growth rate. All else equal, the exchangerate for the EM currenwill most likely preciate if the: A.long-run equilibriumvalue of the high-yielcurrenis reviseupwar B.nominyielspreaetween the EM an countries increases over time C.expecteinflationfferentibetween the EM an countries is reviseupwar Allelse equal, increase in the expecteinflation fferentishoulletopreciation of the EM currency.解析reexchange rate (A/= equilibriumreexchange rate + (realinterest rate B - reinterest rate A)- (risk premium B - risk premium A)根据上述公式。所以A、B错误。在其它条件相同的情况下，预期通胀率的扩大会加两国的风险溢价之差，从而应会导致新兴市场货币贬值。所以C正确。 如题
NO.PZ2018091706000061 问题如下 Assumeththe country hwhis consirea low-yielsafe haven currenwhilethe EM country ha high-yielcurrenwhose value is more exposetofluctuations in the globeconomic growth rate. All else equal, the exchangerate for the EM currenwill most likely preciate if the: A.long-run equilibriumvalue of the high-yielcurrenis reviseupwar B.nominyielspreaetween the EM an countries increases over time C.expecteinflationfferentibetween the EM an countries is reviseupwar Allelse equal, increase in the expecteinflation fferentishoulletopreciation of the EM currency.解析reexchange rate (A/= equilibriumreexchange rate + (realinterest rate B - reinterest rate A)- (risk premium B - risk premium A)根据上述公式。所以A、B错误。在其它条件相同的情况下，预期通胀率的扩大会加两国的风险溢价之差，从而应会导致新兴市场货币贬值。所以C正确。 请老师指教
