Which of the Following Statements Is True

Which of the following statements is true?

A) The valence electrons are only from s and p orbitals in the valence shell.
B) All of the electrons in the valence shell are valence electrons.
C) The valence electrons are always paired in the valence shell.
D) Paired valence electrons are more unstable than unpaired valence electrons.
E) Nonbonding electrons are not found in the valence shell.