An Atom of Copper Has a Mass About Four Times

An atom of copper has a mass about four times greater than that of an atom of oxygen. What choice makes the correct comparison of the relative numbers of copper and oxygen atoms in 1,000 g of each element?

A) The number of copper and oxygen atoms is the name.
B) There are one thousand times as many copper atoms as oxygen atoms.
C) There are one thousand times as many oxygen atoms as copper atoms.
D) There are four times as many oxygen atoms as copper atoms.
E) There are four times as many copper atoms as oxygen atoms.