帮忙看看道题折现为什么是折4年而不 是5年

The first payment is due in one month. 是否可以理解成是先付年金模式呢？但是在这种还贷款的情况下，pv 和fv都分别是什么呢？

discouraged worker和VOLUNTARILY UNEMPLOYE的区别是什么，，谢谢老师

说的什么cost push ?这是啥

When computing net cash flow from operating activities using the indirect method, an addition to net income is most likely to occur when there is a: A gain on the sale of an asset. B loss on the retirement of debt. C decrease in a deferred tax liabílity. 请问为什么选b？

视频中老师讲解是不违规的，那题干是不是写错了？题干说不太可能什么，不太可能不违规是违规的意思啊？

P0=1，连续复利的情况下为什么Pt =1*e的r次方？

为啥FV=100？

Lin Xuan, CFA, is a sell side investment analyst. Lin hears rumors that GR Software may have falsified its financial results while at a software industry conference. When she returns to her office, Lin conducts a thorough analysis of GR. Based on her research, including discussions with some of GR’s customers, Lin is convinced that GR’s reported 50% increase in net income during recent quarters is completely fictitious. Lin is the only analyst suspicious about GR’s reported earnings so far, however. According to the CFA Institute Code of Ethics and Standards of Professional Conduct, the least appropriate action for Lin is to: Areport her suspicions to GR’s management. Bdo nothing, until other analysts support her analysis. Crecommend her clients sell their GR shares immediately. 该题中的C选项 ，analyst和fund manager之间有firewall，那analyst分析出来的结果因为被隔离所以不能告知给客户，这个理解怎么说呢？

请问这句怎么理解