求助GRE逻辑题！

小蜗牛要奋斗

3.Scientist：More than 1，000 large asteroids regularly cross the Earth's path.Even though the probabil-ity of one colliding with the Earth is extremely slight，we should do whatever we can to reduce that probability since any such collision would be catastrophic.The best way to avoid such a disaster is to deflect the asteroids.The only known way of deflecting asteroids is by hitting them with nuclear weapons that would be stored in space stations.　　The scientist‘s claims are structured so as to lead to which of the following conclusions?
　　(A)Nuclear technology is the only technology that can plausibly be used to prevent natural catastrophes.
　　(B)Nuclear weapons should be deployed in space.
　　(C)No catastrophe has yet been caused by the collision of an asteroid with the Earth.
　　(D)The 1，000 large asteroids that cross the Earth's path pose only an extremely slight risk of colliding with the Earth.
　　(E)There is currently no acceptable use to which nuclear weapons can be put，aside from pro-tecting the Earth from asteroids.
答案选B 看不懂 求详细解答！谢谢大牛们！

盖艳娇

so as to lead to 表目的 且  演绎推理  不加外部思维  直接找  关于 科学家的 目的  .The only known way of deflecting asteroids is by hitting them with nuclear weapons that would be stored in space stations.看语态　

luoxiaoustc

个人见解： A nuclear technology确实可以解决asteroid危机，但是不一定是唯一方法。
                B 貌似太过简单。
                C 个人觉得这个貌似有些违反常识，历史上asteroid撞地球引发的灾难，而且这句话本身无法从原文推断。
                D 这句话确实没错，但是作为conclusion有点牵强，这句话就是原文第一句，总不能把论述当做结论吧
                E 逗号之前太过主观，而且无法送原文推断。
如果是我的话，会至少排除A C E 这三个，至于B D，仔细想想，B更好一些。