Which of the Following Statements About Neutrons Is CORRECT

Which of the following statements about neutrons is CORRECT?

A) An atom has the same number of neutrons and electrons.
B) Most neutrons are found in the last two shells of the atom.
C) All neutrons are found in the valence shell of the atom.
D) One-half of neutrons are positive and one-half are negative,giving them an overall neutral charge.
E) All neutrons are found in the nucleus of the atom.