whAt is thE proFEssor’s rEAson For sAying this A、BECAusE thE ConsumEr hAs AlrEADy usED mAny CrEDit CArDs. B、BECAusE thE ConsumEr hAs spEnt too muCh monEy Buying things. C、BECAusE thE ConsumEr ovErspEnDs AnD CAnnot mAkE hEr pAymEnts. D、BECAusE thE ConsumEr ForgEts to pAy hEr CrEDit Bill.