Which of the Following Is the Best Description of Metallic

Which of the following is the best description of metallic bonding?

A) Positively charged metal ions surrounded by freely moving electrons
B) Alternating positively charged metal ions and negatively charged metal ions
C) Pairs of metal atoms sharing electrons, plus weak intermolecular forces holding the pairs in place in the metal crystal
D) Groups of three metal atoms sharing electrons (three-center bonds) , plus weak intermolecular forces holding the groups in place in the metal crystal
E) Metallic bonding is essentially the same as covalent bonding, except that in metallic bonding, protons are shared rather than electrons