You Hear a News Story About an X-Ray Telescope Being

You hear a news story about an X-ray telescope being built on Earth.You know this can't be possible because

A) X-rays do not travel very far through Earth's atmosphere.
B) X-ray telescopes are impossible to build.
C) X-ray telescopes would receive too much interference from hospitals.
D) it would cost too much money.
E) X-rays see through things, making them pointless for observations.