一道GMAT逻辑题 OG13逻辑33填空题

一道GMAT逻辑题 OG13逻辑33填空题
Although the number of large artificial satellites orbiting the Earth is small compared to the number of small pieces of debris in orbit,the large satellites interfere more seriously with telescope observations because of the strong reflection they produce.Because many of those large satellites have ceased to function,the proposal has recently been made to eliminate interference from nonfunctioning satellites by exploding them in space.This proposal,however,is ill conceived,since------------- .
(A) many nonfunctioning satellites remain in orbit for years
(B) for satellites that have ceased to function,repairing them while they are in orbit would be prohibitively expensive
(C) there are no known previous instances of satellites’ having been exploded on purpose
(D) the only way to make telescope observations without any interference from debris in orbit is to use telescope launched into extremely high orbits around the Earth
(E) a great increased number of small particles in Earth’s orbit would result in a blanket of reflections that would make certain valuable telescope observations impossible
原文说虽然人造卫星的数量比比小碎片少许多许多,且人造卫星比小碎片的干扰要严重很多,那为什么新生成的小碎片会干扰观测?
为什么不选C?