What Holds Electrons in a Covalent Bond

Multiple Choice

What holds electrons in a covalent bond?

A) It is the fact that two electrons are paired in the same orbital.
B) The electron sharing that occurs makes the atoms involved smaller and more compact.
C) An increase in potential energy,caused by electrical repulsion of the electrons in the bond,holds the electrons.
D) The negative charges on the electrons are attracted by the positive charges on both nuclei.