请教OG11th紫色封面的书里面的SC-16

16、Declining values for farm equipment and land, the collateral against which farmers borrow to get through the harvest season, is going to force many lenders to tighten or deny credit this spring.

(A) the collateral against which farmers borrow to get through the harvest season, is

(B) which farmers use as collateral to borrow against to get through the harvest season, is

(C) the collateral which is borrowed against by farmers to get through the harvest season, is

(D) which farmers use as collateral to borrow against to get through the harvest season, are

(E) the collateral against which farmers borrow to get through the harvest season, are

E选项为正确。

这句话的语法结构是怎么理解的 ：the collateral against which farmers borrow to get through the harvest season,。

如果还原的话就是：farmers borrow against the collateral to get through the harvest season？

弄不懂。哪位可以讲解一下。

觉得顺序应该是the collateral which farmers borrow (to get through the harvest season )against...

这句话作declining values的同位语，其中心词是collateral. "which farmers borrow (to get through the harvest season) against" 作修饰成分。

collateral--noun. legal property that you agree to give to a bank if you fail to pay back money you have borrowed.

谢谢你了！对SC实在是头大。

我还是有点疑问。

。。farmers borrow the collateral to get through the harvest season against。。。

against是什么作用？能否省略呢？