whiCh oF thE Following BEst DEsCriBEs thE orgAnizAtion oF thE pAssAgE
A．A DEsCription oF A proBlEm in onE ArEA oF EConomiCs, FollowED By A rEvision oF thE DEsCription For two othEr ArEAs.
B．A DEsCription oF A proBlEm in onE ArEA EConomiCs, FollowED By A suCCEssFul CountEr-ExAmplE, thEn thE DEsCription oF A proBlEm in A sEConD ArEA.
C．A DEsCription oF thE suCCEssFul AppliCAtion oF EConomiCs to onE suBjECt, FollowED By A DEsCription oF its limitAtions in two othEr ArEAs.
D．A DEsCription oF onE ArEA oF EConomiCs, whosE proBlEms ArE CompArED with thosE oF two othEr ArEAs oF EConomiCs.
E．(E) A CritiCAl DistinCtion BEtwEEn proBlEms in two sEpArAtE ArEAs oF EConomiCs.