两道boldface！困惑中~

lunachasedream

Theinterstitial nucleus, a sub-region of the brain's hypothalamus, is typicallysmaller for male cats than for female cats. A neurobiologist performedautopsies on male cats who died from disease X, a disease affecting no morethan 0.5 percent of male cats, and found that these male cats had interstitialnuclei that were as large as those generally found in female cats.Thus, the size of the interstitial nucleus determines whether or not male catscan contract disease X, but, the hypothalamus is known not to be causallylinked to disease Y, and disease X is a subtype of disease Y.

The two portions in boldface play which of the following roles?

(A) The first is a fact insupport of the consideration that is one of two points of this argument; thesecond is the alternative point that weighs against the first.
(B) The first is an evidence that supports the consideration that the argumentincludes; the second is the fact that weighs against that consideration thatcould be drawn from the first.
(C) The first is ageneral principle that is against the conclusion; the second is thatconclusion.
(D) The first is an evidence that supports the conclusion; the second is anexceptional example.
(E) The first is a fact in support of the conclusion that the argument dependson; the second is a fact that is against the first one.
这个为什么选C呢？~谁能分析一下这个argument中各个句子的role？？

Environmental organizations want to preserve the land surrounding the Wilgrinn Wilderness Area from residential development. They plan to do this by purchasing that land from the farmers who own it. That plan is ill-conceived: if the farmers did sell their land, they would sell it to the highest bidder, and developers would outbid any other bidders. On the other hand, these farmers will never actually sell any of the land, provided that farming it remains viable. But farming will not remain viable if the farms are left unmodernized, and most of the farmers lack the financial resources modernization requires. And that is exactly why a more sensible preservation strategy would be to assist the farmers to modernize their farms to the extent needed to maintain viability.

In the argument as a whole, the two boldface proportions play which of the following roles?

A. The first presents a goal that the argument rejects  as ill-conceived; the second is evidence that is presented as grounds for that rejection.
B. The first presents a goal that the argument concludes cannot be attained; the second is a reason offered in support of that conclusion.
C. The first presents a goal that the argument concludes can be attained; the second is a judgment disputing that conclusion.
D. The first presents a goal, strategies for achieving which are being evaluated in the argument; the second is a judgment providing a basis for the argument’s advocacy of a particular strategy.
E. The first presents a goal that the argument endorses; the second presents a situation that the argument contends must be changed if that goal is to be met in the foreseeable future.

正确答案D，我选了A，为什么啊？！
作者不是讲了这个plan是ill-conceived的吗？然后需要一个更viable的计划。
那么A中的reject为什么不对？？