Which Correctly Describes the Structure of an Atom

Multiple Choice

Which correctly describes the structure of an atom?

A) There are the same number of protons and neutrons.
B) There are the same number of protons and electrons.
C) There are the same number of neutrons and electrons.
D) The number of protons,neutrons,and electrons never changes.
E) There are never the same number of neutrons and protons.