[单选题]
Metallic bonding is causo:2 -nqt 7huc bfun.+red *p8evxca(/v)k ji zo 5muulb -dy+ :l;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.
