The Most Important Function of an Astronomical Telescope Is To

The most important function of an astronomical telescope is to:

A) collect as much light as possible and bring it to a focus
B) magnify (enlarge) celestial objects so we can see them clearly
C) enhance the violet colors of an object, which our eyes have trouble seeing
D) bring distant objects closer by pulling on the light
E) pierce through the clouds so a cloudy night is not wasted