As scientists have learned more about atoms models of atoms, models of atoms have changed. One of the first atomic models was a solid ball, such as marble.

What are two limitations of using a marble to model an atom?

A) The model is much harder to see than a real atom.
B) The model is not made of commonly available materials or objects.
C) The model does not move or behave like a real atom.
D) The model does not show the true size of an atom.