老师repo seller. repo Buyer和repo investor 有什么区别，哪个是使用信用额度？

mapping必须是两个相同的标的资产才能mapping吗?如果不是的话，对于B选项来说，公司债映射到相同到期期限的国债，国债的风险因子更少，错在哪里呢？

请讲一下这道题

76 b can u explain why answer B is incorrect in detail?

The credit spread in CDS is that equal to the cds premium price? When it is default , the claim is it equal to credit spread?

47 B isn’t duration mapping consider coupon also? Is coupon not equal to cash flow ?why B is wrong

百题第91题，最后是什么结果，应该都选吗，原因是什么

百题第69题为什么两个点都是对的还是不理解

案例百题第6题D选项和第5题B选项一模一样，为什么第5题不选B？

What is full form of fhs