问题如下图：
选项：
A. 
B. 
C. 
老师这道题能解释下什么意思嘛 解释：
NO.PZ2018062020000036问题如下When the collateralmanager fails pre-specifierisk tests, a C is: A.leveragebyrecing the senior bonclass. B.restructuretoreits most expensive funng source. C.liquitepayingoff the bonclasses in orr of seniority. A is correct.When the collatermanager fails pre-specifietests, a provision is triggerethrequires the payoff of theprincipto the senior class until the tests are satisfie This rection ofthe senior class effectively leverages the C because the C’s cheapest funng souris rece 考点C解析如果C manager没有通过事先指定的测试，就需要将senior层级的本金归还，直到通过测试为止。把senior层级本金归还可以降低C的杠杆，A正确。 B,C翻译一下？
NO.PZ2018062020000036 考试时候会有这种细节题吗？
老师 这道题是什么意思
b和c是什么意思？
