看不明白答案 英镑贵了才对啊
问题如下图：
选项：
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C. 
解释：
NO.PZ2018091706000045 问题如下 Analyst Bob is stuing foreign exchange market. He observes that:1. The spot exchange market rate is 1.5500 USGfor bian1.5505 for ask.2. The 6-month forwarrate is 1.5532 USGfor bian1.5540 for ask.So, Bob cget whiof the following conclusions? A.The 6-month USinterest rate is less ththe 6-month Ginterest rate. B.The 6-month USinterest rate is greater ththe 6-month Ginterest rate. C.The 6-month USinterest rate is equto the 6-month Ginterest rate. B is correct.考点Interest rate parity解析根据利率平价理论，我们可以得到如下公式FUSGBP=SUSGBP(1+iUS180360)1+iGBP(180360))F_{USGBP}=S_{USGBP}{(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})}FUSGBP=SUSGBP(1+iGBP(360180)1+iUS(360180))现在分析师Bob观察到的结果是F S。因此，等式右边(1+iUS180360)1+iGBP(180360))(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})(1+iGBP(360180)1+iUS(360180))这一项数值一定大于1。所以该项中分子的iUS_{USiUS 分母的iGBPi_{GBP}iGBP。所以选 No.PZ2018091706000045 (选择题)这道题，USGBP提高了，GBP升值，升值不应该说明利率更高吗？因为利率高，相应货币会增值，为啥反而是US率更高？
NO.PZ2018091706000045 问题如下 Analyst Bob is stuing foreign exchange market. He observes that:1. The spot exchange market rate is 1.5500 USGfor bian1.5505 for ask.2. The 6-month forwarrate is 1.5532 USGfor bian1.5540 for ask.So, Bob cget whiof the following conclusions? A.The 6-month USinterest rate is less ththe 6-month Ginterest rate. B.The 6-month USinterest rate is greater ththe 6-month Ginterest rate. C.The 6-month USinterest rate is equto the 6-month Ginterest rate. B is correct.考点Interest rate parity解析根据利率平价理论，我们可以得到如下公式FUSGBP=SUSGBP(1+iUS180360)1+iGBP(180360))F_{USGBP}=S_{USGBP}{(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})}FUSGBP=SUSGBP(1+iGBP(360180)1+iUS(360180))现在分析师Bob观察到的结果是F S。因此，等式右边(1+iUS180360)1+iGBP(180360))(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})(1+iGBP(360180)1+iUS(360180))这一项数值一定大于1。所以该项中分子的iUS_{USiUS 分母的iGBPi_{GBP}iGBP。所以选 老师，请问这道题能否通过sprea化来选出答案呢？现在的sprea0.5，未来的sprea0.8，USGBP的sprea升能否判断出两个货币谁升值谁贬值呢？请问通过这个思路能不能得到答案呀
NO.PZ2018091706000045 问题如下 Analyst Bob is stuing foreign exchange market. He observes that:1. The spot exchange market rate is 1.5500 USGfor bian1.5505 for ask.2. The 6-month forwarrate is 1.5532 USGfor bian1.5540 for ask.So, Bob cget whiof the following conclusions? A.The 6-month USinterest rate is less ththe 6-month Ginterest rate. B.The 6-month USinterest rate is greater ththe 6-month Ginterest rate. C.The 6-month USinterest rate is equto the 6-month Ginterest rate. B is correct.考点Interest rate parity解析根据利率平价理论，我们可以得到如下公式FUSGBP=SUSGBP(1+iUS180360)1+iGBP(180360))F_{USGBP}=S_{USGBP}{(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})}FUSGBP=SUSGBP(1+iGBP(360180)1+iUS(360180))现在分析师Bob观察到的结果是F S。因此，等式右边(1+iUS180360)1+iGBP(180360))(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})(1+iGBP(360180)1+iUS(360180))这一项数值一定大于1。所以该项中分子的iUS_{USiUS 分母的iGBPi_{GBP}iGBP。所以选 汇率上升 US值 应该是US率低啊
NO.PZ2018091706000045 The 6-month USinterest rate is greater ththe 6-month Ginterest rate. The 6-month USinterest rate is equto the 6-month Ginterest rate. B is correct. 考点Interest rate parity 解析根据利率平价理论，我们可以得到如下公式 FUSGBP=SUSGBP(1+iUS180360)1+iGBP(180360))F_{USGBP}=S_{USGBP}{(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})}FUSGBP=SUSGBP(1+iGBP(360180)1+iUS(360180)) 现在分析师Bob观察到的结果是F>S。因此，等式右边 (1+iUS180360)1+iGBP(180360))(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})(1+iGBP(360180)1+iUS(360180))这一项数值一定大于1。所以该项中分子的 iUS_{USiUS 分母的 iGBPi_{GBP}iGBP。所以选题目中并没有明确covereparity，直观的看是美元贬值了，但是美元的利率却高于英镑？
NO.PZ2018091706000045 The 6-month USinterest rate is greater ththe 6-month Ginterest rate. The 6-month USinterest rate is equto the 6-month Ginterest rate. B is correct. 考点Interest rate parity 解析根据利率平价理论，我们可以得到如下公式 FUSGBP=SUSGBP(1+iUS180360)1+iGBP(180360))F_{USGBP}=S_{USGBP}{(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})}FUSGBP=SUSGBP(1+iGBP(360180)1+iUS(360180)) 现在分析师Bob观察到的结果是F>S。因此，等式右边 (1+iUS180360)1+iGBP(180360))(\frac{1+i_{US{(\frac{180}{360})}}{1+i_{GBP}{(\frac{180}{360})}})(1+iGBP(360180)1+iUS(360180))这一项数值一定大于1。所以该项中分子的 iUS_{USiUS 分母的 iGBPi_{GBP}iGBP。所以选这题目的spot rate和forwarrate都需要用（biask）/2的mile rate算吗？
