GMAT-29-15请教求解思路

sv2000

Kernland imposes a high tariff on the export of unprocessed cashew nuts in order to ensure that the nuts are sold to domestic processing plants.  If the tariff were lifted and unprocessed cashews were sold at world market prices, more farmers could profit by growing cashews.  However, since all the processing plants are in urban areas, removing the tariff would seriously hamper the government’s effort to reduce urban unemployment over the next five years. Which of the following, if true, most seriously weakens the argument?

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yangsh

E

不去掉关税，会损害农民利益，农民会进城，城市失业率上升，政府目标达不到。

sv2000

谢谢Yangsh,明白了。