Then she began looking about, and noticed that what could be seen from the old room was quite common and uninteresting, but that all the rest was as different as possible. For instance, the pictures on the wall next the fire seemed to be all alive, and the very clock on the chimney-piece (you know you can only see the back of it in the Looking-glass) had got the face of a little old man, and grinned at her. —Through the Looking Glass,
Lewis Carroll

What does this passage say about the looking-glass world?

It is the reverse, or opposite, of the old room.
It is common and very uninteresting to Alice.
It is exactly like the old room was to Alice.
The pictures are of people Alice does not know.