关于 OG-10的第三选项的解释，我没有看明白，请高手指教．C cannot be inferred since it is consistent with the stated information that an appropriately designed nuclear defense system might be able to distinguish nuclear from meteorite explosions. 原文里哪里说了核防御系统能够区分这两种爆炸啊？

谢谢！

10.

Meteorite explosions in the Earth’s atmosphere as large as the one that destroyed forests in LACE w:st="on">SiberiaLACE>, with approximately the force of a twelve-megaton nuclear blast, occur about once a century. The response of highly automated systems controlled by complex computer programs to unexpected circumstances is unpredictable.

Which of the following conclusions can most properly be drawn, if the statements above are true, about a highly automated nuclear-missile defense system controlled by a complex computer program?

A. Within a century after its construction, the system would react inappropriately and might accidentally start a nuclear war.

B. The system would be destroyed if an explosion of a large meteorite occurred in the Earth’s atmosphere.

C. It would be impossible for the system to distinguish the explosion of a large meteorite from the explosion of a nuclear weapon.

D. Whether the system would respond inappropriately to the explosion of a large meteorite would depend on the location of the blast.

E. It is not certain what the system’s response to the explosion of a large meteorite would be, if its designers did not plan for such a contingency.

请指点一下!