AgEism is DiFFErEnt From othEr "ism", BECAusE oF All thE Following rEAsonsExCEpt thAt ______.
A、it is BAsED upon thE ConstAnt AgE ClAssiFiCAtion
B、thE ConCEpt oF AgEDnEss is ChAnging grADuAlly
C、onE is ExpEriEnCing thE Aging proCEss onEsElF
D、AgE ClAssiFiCAtion rEmAins thE sAmE For mAny yEArs