老师，原版书课后题R20 第五题AC选项错在哪里？B为什么要强调是Option on 长期政府债券期货？

老师，请问书本470页第二十二题答案，fiancial captial为什么不包括insurance？insurance和annuity是属于fiancial capital还是human capital？

老师，原版书课后题R20 第5题有一个衍生问题：既然凸性有利于投资者，那么有没有什么情况下会自降凸性呢？（是不是只有预期未来利率曲线stable或是波动小的情况？） 第6题Statement 1 正确的说法应该是凸性大的portfolioyields更低吗？

老师，请问书本467页第十一题答案，能否详细解释一下human capital公式是什么意思？各指代什么？

老师，请问书本466页第三题，A indemnity plan, B preferred provider plan, C health maintenance organization plan各自指什么意思？

老师，请问书本391页第十二题答案，From a tax perspective, the owner is taxed currently on the cash received and typically receives a tax deferral on the stock rolled over into the new entity. This strategy would be appealing to a business owner considering selling a private business in the near future and residing in a jurisdiction where tax rates are scheduled to increase这一段怎么理解？为什么会rolled over into the new entity? tax increase是什么情况？

老师，请问书本391页第十一题答案，There are two potential drawbacks with this strategy: The investor retains full downside exposure to the shares (to the extent the share price decreases by more than the premium received), and the upside potential is limited (the call strike price plus the premium received).第一点不太明白？股价下降不是既能保留股票又能赚取期权费，为什么会是缺点？第二点括号里的和limited有什么关系？这里是想表达什么意思？

题目说的是cunrrent salary是25万，在56岁的时候salary不是应该25*（1+3%）吗？

老师你好！不好意思分类里没有Fixed Income选项 我只能随便选了 想问一下这个Impact Investing到底怎么解释 感觉老师说的和讲义写的不太一样呢。 谢谢啦

老师，这里为什么短期是浮动利率，长期是固定利率呀？ 是经验之谈还是题目中给到的描述啊