此题结构请牛牛们解释！

Xiaotongdi

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The loan company announced it would soon lend money to borrowers with proven records of their not paying back their loans on time, collectively known as the subprime lending market.

A. of their not paying back their loans on time,

B. of not paying back their loans on time, a group

C. of not paying back their loans on time, with such a group

D. that they do not pay back their loans on time,

E. that they do not pay back their loans on time, such a group

这题选B，我想知道这个句子的结构，尤其是a group为什么可以这样突然冒出来？如果以后遇到此类型应该如果对应？

sandychen168

a group是borrowers的同位语，不是突然冒出来的，是解释borrowers的

Xiaotongdi

a group 是解释borrowers??? 我以为是解释前面一堆东西，以为前面那些是它的定义。

sandychen168

a group指代borrowers，而with的介宾结构修饰borrowers

Xiaotongdi

哦哦……明白了！谢谢……