An Atom X Contains 14 Protons, 13 Electrons, and 12

An atom X contains 14 protons, 13 electrons, and 12 neutrons, and atom Y contains 14 protons, 14 electrons, and 12 neutrons. What can you conclude?

A) Y is an ion but X is not.
B) X and Y are both ions.
C) X and Y both have filled valence shells.
D) X and Y are isotopes of the same element.
E) X and Y are atoms of the same element.