DECEntrAlizAtion is BEst DEFinED As ______.
A．movEmEnt From thE CEntrAl City to nu'Al ArEAs
B．movEmEnt From thE CEntrAl City to thE suBurBs
C．DisorDErly ExpAnsion oF thE CEntrAl City
D．shrinking oF mEtropolitAn