CulturE shoCk oCCurs ______.
A．whErE onE CAn ConDuCt nEgotiAtions For gooDs oF FixED priCEs.
B．whErE pEoplE ExprEss iDEAs AnD Emotions ContrAry to whAt thEy intEnD to ExprEss
C．whEn vAluE stAnDArDs ArE so DiFFErEnt thAt onE is unABlE to mAkE his own juDgmEnt
D．whEn onE losEs All hopE oF rEturning to his homE EnvironmEnt