og-147请教，讨论链接没有这个

147. Crops can be traded on the futures market before they are harvested. If a poor corn harvest is predicted, prices
of corn futures rise; if a bountiful corn harvest is predicted, prices of corn futures fall. This morning meteorologists
are predicting much-needed rain for the corn-growing region starting tomorrow. Therefore, since adequate moisture
is essential for the current crop’s survival, prices of corn futures will fall sharply today.
Which of the following, if true, most weakens the argument above?
(A) Corn that does not receive adequate moisture during its critical pollination stage will not produce a
bountiful harvest.
(B) Futures prices for corn have been fluctuating more dramatically this season than last season.
(C) The rain that meteorologists predicted for tomorrow is expected to extend well beyond the corn-growing
region.
(D) Agriculture experts announced today that a disease that has devastated some of the corn crop will spread
widely before the end of the growing season.
(E) Most people who trade in corn futures rarely take physical possession of the corn they trade.

我在讨论连接里面没有找到讨论，是不是我的思路太弱了。

这个题目的答案是D。

为什么A不可以呢？A说“玉米在授粉的关键期没有得到足够的水分，必然不会大丰收。”

所以价格应该会涨，我想这不正好weeken 了结论prices of corn futures will fall sharply.

请NN们指教，是不是我理解错了？

谢谢judydongxueni的回答，原来我是把时态看错了，如果之前没有得到雨水，A应该是过去时