thE tip" know whEn to wAlk AwAy" tElls us thAt______.
A．you shoulD wAlk AwAy whEn you sEE somEthing you likE But ExpEnsivE.
B．somEtimEs AppropriAtE DEtAChED AttituDEs CAn EnsurE you A BArgAin.
C．Don't ACt too shy to lEAvE.
D．you'D BEttEr wAlk AwAy whEn you hAvE A sEConD ChAnC