解析视频和题目对不上

视频28分钟的例题，accounting base=-10000，tax base=0，因为是liability，所以是difference=tax base- accounting base=0-（-10000）=10000，这里为什么是0-10000，符号没了？

为啥long run被翻译为长期成本？

这里为什么≤6%变成了H0原假设.想问一下,不是想要证明的放在备择假设中吗?

老师好，第3小问的解析说R²是两ratio之间相关系数的平方，那也就是说是X和Y的相关系数的平方，但是讲义上说Multiple R是Y的真实值与估计值之间的相关系数啊。老师可以解释一下吗

老师讲例题，说CMO不是一种债券，是一个tranch？？CMO不是三大机构发行的债券么。。。

我想知道小故事里的厂商是哪一个？哈哈哈

这个是在哪里有讲到？

老师好，第3小问可以讲一下A.C为什么不对吗？

Antonio Mendoza, CFA, an investment manager operating as AM Investments, solicits new business by making brief presentations at which he makes available a single-page information sheet that summarizes his performance history for the past 10 years. On the sheet, Mendoza has his phone number for those who would like more information along with the statement, "AM Investments has prepared and presented this report in compliance with the Global Investment Performance Standards (GIPS)." Does Mendoza's brief presentation and information sheet violate GIPS?ANo.BYes, because the information sheet is inadequate.CYes, because the statement claims GIPS compliance for a single report.这个题不懂，为啥说不违反