What Do We Mean by the Observable Universe

Multiple Choice

What do we mean by the observable universe?

A) the part of the universe that we can see with the naked eye
B) the part of the universe that we can see through telescopes
C) the part of the universe that could be observed in principle,including things that may require future technologies
D) the compendium of all objects that we have observed to date
E) the entire universe,since it is inconceivable that there could be parts of the universe that we cannot observe