thE nAvigAtion systEms in CArs likE lExus, Bmw AnD AuDi ArE mEntionED to show ______.
A．thE immAturity oF thE nEw tEChnology
B．thE supEriority oF thE gloBAl positioning systEm
C．thE CAusE oF priCE FluCtuAtions in CAr EquipmEnt
D．thE DiFFErEnt wAys oF proviDing guiDAnCE to thE DrivEr