请教 THEY\THEM 指代

the only way for growers to salvage frozen citrus is to process them quickly into juice concentrate before they rot when warmer weather returns.

A, to process them quickly into juice concentrate before they rot when warmer weather returns.

B,if they are quickly processed into juice concentrate before warmer weather returns to rot them

C,for them to be processed quickly into juice concentrate before the fruit rots when warmer weather returns

D,if the fruit is quickly processed into juice concentrate befor ethey rot when warmer weather returns

E,to have it quickly processed into juice concentrate before warmer weather returns and rots the fruit

A, THEM 无指代

B,为单数。

C,为单数，

D,THEM 无指代。

E, RIGHT,

我有个疑问，THEM 在gmat里不是指代最近的那个N 吗 ？

不可以理解为，保存柑橘的最好方法就是把柑橘做成浓缩汁。 ？？

?