mock b Q8 B 算得时候不是还应该考虑汇率变化吗？答案有问题吗？只算了rolldown return 和Δyield的变化？多谢

老师好 请问periodic certain annuity 和 life annuity with period certain 对 income yield 的影响怎么区分？谢谢

课后题134页2题goal prioritization排序请老师回复一下

bull call的图形为什么是这样？不是longcall和shortcall的结合吗？

statement 2哪里不对

stament2哪里不对

L3V3, example 30. If the credit spread falls by one-third, should the E(OAS) be one-third of the original OAS? Take A as an example, should the E(Excess spread) be 1.4% - 5.5 * (1.4%*1/3) - 0.1% *2/3 ?

请问为什么open-ended liquidity 要小于close ended liquidity？

官网题： Bragg notes that the fixed-income portfolio manager has strong views about the effects of macroeconomic factors on credit markets and follows a top-down investment process。 问 The most appropriate risk attribution approach for the fixed-income manager is to： 不懂答案为什么是attribute tracking risk to relative allocation and selection decisions

这道题答案是b，为什么AC不对？