A review of exam standards is to be announced, because______.

A、therearerumorsthatsomeuniversitiesadmitA-levelfailures
B、therearecriticismsonthenationaleducationalperformance
C、thereiscontroversyoveranalarmingdropoutrateofnewvocationalequivalents
D、therearesuspicionsonthefeasibilityoffoundationcourse