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 此题的答案是选E,可是我对整句话不是太理解,可否帮我翻译一下,“the collateral against which farmers borrow to get through the harvest season”这句话是做什么成分啊?