Which of the following statements is not true about ranking? ( )

A、Rankingperformsafunctionwhichisneitherprofessionalnoreducational,butmerelyeconomic.
B、Thepurposeofrankingistoidentifyandcorrectstudents’faultsorreinforcingtheirexcellence.
C、Itiswhenmorepeoplewantsomethingthantheavailablesupplycansatisfythatrankingbecomesnecessary.
D、Itisthelimitedadmissiontothesmallnumberofhighlydesiredcollegesthatdemandsarankingofthesecondaryschoolgraduates.