问题
单项选择题
Which of the following statements about asset backed securities (ABSs) is most accurate（）
A. The credit rating of an ABS must be the same as that of the issuer.
B. Residential mortgages represent the largest type of asset that has been securitized.
C. There is an inverse relationship between credit enhancements and ratings.
答案
参考答案：B
解析：
The credit rating of an ABS pool is a function of its credit enhancements, which are quite common. The more credit enhancements, the higher the ratings.