What Was the Major Problem with the Hubble Space Telescope

Multiple Choice

What was the major problem with the Hubble Space Telescope when it was first launched into orbit?

A) its antenna wouldn't open, so the data could not be sent back to Earth
B) it was in the wrong orbit, so it dipped down into the Earth's thicker atmosphere regularly
C) its spectroscope broke during the launch
D) the mirror's shape was slightly wrong, so all the light did not come to a single focus
E) the mirror cover was stuck in the "partly on" position, making part of the mirror not usable