140. 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

In choices A, B, and C, the singular verb is does not agree with values, the subject of the sentence. Choices B, C, and D use awkward and wordy expressions. In B and D, the expression use as collateral to borrow against to get through... awkwardly juxtaposes two infinitives and is unnecessarily redundant, since use as collateral and borrow against have the same meaning. Choice C presents the wordy expression the collateral which is borrowed against by farmers to get through..., in which the passive verb creates an awkward and confusing construction. Choice E, the best answer, succinctly and clearly identifies the Declining values as the collateral against which farmers borrow and correctly uses the plural verb are. Collateral: 抵押品

如果选E的话，那么 the collateral against which farmers borrow to get through the harvest season 是作什么成分 ？