麻烦老师解释一下Avelyn第二个评论，谢谢
问题如下图：
选项：
A. 
B. 
C. 
解释
NO.PZ2019103001000083 请问这里的correlation指的是谁和谁的correlation呢？如果说的是优先和夹层的correlation，为什么会影响到劣后层？
NO.PZ2019103001000083 Avelyn’s first comment Avelyn’s seconcomment A is correct. Cs typically inclu some form of subornation. With subornation, a C hmore thone bonclass or tranche, inclung senior bonclasses, mezzanine bonclasses (whihave cret ratings between senior ansubornatebonclasses), ansubornatebonclasses (often referreto resior equity tranches). The correlation of expectefaults on a C’s collateraffects the relative value between the senior ansubornatetranches of the C. correlations increase, the values of the equity tranches usually increase relative to the values of the senior anmezzanine tranches C错是不是应该是coverebon谢谢
Avelyn’s first comment Avelyn’s seconcomment A is correct. Cs typically inclu some form of subornation. With subornation, a C hmore thone bonclass or tranche, inclung senior bonclasses, mezzanine bonclasses (whihave cret ratings between senior ansubornatebonclasses), ansubornatebonclasses (often referreto resior equity tranches). The correlation of expectefaults on a C’s collateraffects the relative value between the senior ansubornatetranches of the C. correlations increase, the values of the equity tranches usually increase relative to the values of the senior anmezzanine tranches 请问老师b为什么错呢谢谢
NO.PZ2019103001000083 Also, I n't unrstanthe last sentenof the explanation below \"我equity层还能拿到最高的收益率（因为卖的最便宜）\". Please help! Thank you! WallE_品职答疑助手 · 8 个月前 同学你好， 以勘误为准，这里就是选您就这么想，correlation上升的极限就是1，要么违约，要么都不违约，都不违约的话，我equity层还能拿到最高的收益率（因为卖的最便宜）。
这道题前面的都越看越晕了，可不可重新理一下思路，考点在哪里
