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 我大概的看过了以前的一些讨论,我想问的是collateral是可数名词,如果按照解释做farm equipment and land 同位语的话为什么不用collaterals |