老师，还是不明白为什么不能选A

consumer discretionary 消费者可以选择的（非必须品）

我觉得选B更有说服力啊.你们自己的解答也把A排除了的

05.单选题 收藏 标记 纠错 Using the following spot rates for pricing the bond, what is the present value of a three-year security that pays a fixed annual coupon of 6%? Year 1: 5.0% Year 2: 5.5% Year 3: 6.0% 这个题应该是算下等于105吧， 6/(1+5%)=5.7143, 6/(1+5.5%)*(1+5.5%)=5.3908, 106/(1+6%)*(1+6%)*(1+6%)=89.008, 再求和怎么能算出题目里的答案哪？

he interest rate risk of a bond is the? A risk related to the possibility of bankruptcy of the bond's issuer. B risk that arises from the uncertainty about the bond's return caused by changes in interest rates over time. C risks related to the possibility of bankruptcy of the bond's issuer and that arises from the uncertainty of the bond's return caused by the change in interest rates. 这道题完全不会

原版书后题，这题没看懂，是啥意思？

您好，这道题需要用到 standard deviation，但是我不知道怎么看该用整体的还是sample的，因为感觉整个portfolio都在了应该是population，但是还是应该用sample的，所以想问一下，该怎么看？谢谢！

不是同一天买股票价格也不一样啊，未来价值一样？

这道题不应该选c吗 委托人才是最终受益人 相关限制要求是受托人提出来的

k是指什么？