NO.PZ2023052301000071
问题如下：
Mojofon’s S&P issuer credit rating is B+. Its S&P subordinated bond issue rating is most likely:
选项：
A.
BB –.
B.
B+.
C.
B –.
解释：
The correct answer is C.
An issuer credit rating is the rating applied to a company’s senior unsecured debt. The rating agency will usually apply a notching adjustment to the lower-ranked subordinated debt, whose rating should therefore be lower than that of the senior unsecured debt.
这题怎么判断？为什么不是B+呢？
