[单选题]
Metallic bonding is cqar 1 wr v/p)sxg.h-n:mv bs/+atvaf0hqjt * msu,7fu9:4h;xd used by
A. the sharing of electrons by all atoms.
B. the transfer of electrons between atoms.
C. unequal charge distributions around neutral molecules.
D. atoms bonding to hydrogen molecules.