求解答 Prep T-9-Q2

两次prep 模考V38，GWD基本都错在12-13个，语法错误率不高很欣慰。。。。但是！！！
阅读害死人啊啊啊啊
阅读错好多啊，都错在阅读啊，阅读错的一坨一坨的啊。。。。
逻辑水平非常飘忽不定啊……后天要考试了，各种不淡定啊

咆哮完了……问NN们一道逻辑，卡住了想不明白了……好纠结啊T.T

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?

A. Some of the by-products of processing cashews are used for manufacturing paints and plastics.

B. Other countries in which cashews are processed subsidize their processing plants.

C. More people in Kernland are engaged in farming cashews than in processing them.

D. Buying unprocessed cashews at lower than world market prices enables cashew processors in Kernland to sell processed nuts at competitive prices.

E. A lack of profitable crops is driving an increasing number of small farmers in Kernland off their land and into the cities.

文中已经说了high tariff--more farmer could profit, E的lack of profitable crops不就矛盾了吗~~5555

求解答~~