求助一道题目，总觉得两个答案都不对

Insect infestations in certain cotton-growing regions of the world have caused dramatic increases in the price of cotton on the world market. By contrast, the price of soybeans has long remained stable. Knowing that cotton plants mature quickly, many soybean growers in Ortovia plan to cease growing soybeans and begin raising cotton instead, thereby taking advantage of the high price of cotton to increase their income significantly, at least over the next several years.

Which of the following, if true, most seriously weakens the plan’s chances for success?

A. The cost of raising soybeans has increased significantly over the past several years and is expected to continue to climb.

B. Tests of a newly developed, inexpensive pesticide have shown it to be both environmentally safe and effective against the insects that have infested cotton crops.

C. In the past several years, there has been no sharp increase in the demand for cotton and for goods made out of cotton.

D. Few consumers would be willing to pay significantly higher prices for cotton goods than they are now paying.

E. The species of insect that has infested cotton plants has never been known to attack soybean plants.

我选的D，可觉得这两个答案都别扭， 哪位高手能帮忙看一下啊，谢！！！！

Insect infestations (A) => Cotton price up (B)

New pesticide (C) =>  A↓ =>  B↓，所以B对

至于D，即使成立，cotton price从此可能不变, 或 insignificantly higer，但只要不掉就仍有利可图，所以还是应该种棉花

懂拉

多谢！！