A、BECAusE thEy hAvE nEw FEAturEs AnD FunCtions.
B、BECAusE thEy ArE morE sophistiCAtED thAn othEr moDEls.
C．BECAusE thEy hAvE nEw ACCEssoriEs AttAChE
D、
D、BECAusE it wAnts to ACCumulAtE FunDs For FuturE rEsEArCh.