Among thE Following stAtEmEnts, ______ BEst sums up thE mAin iDEA oF thE pAssAgE.
A、BEAtlEs FinAlly rEAlizED thAt in orDEr to sEll thEir musiC wEll, thEy hAvE to go to thE intErnEt
B．thE ExAmplE oFBEAtlEs illustrAtEs thAt EvEn thEy CAnnot Control thE intErnEt
C．thErE is FiErCE CompEtition BEtwEEn itunEs AnD miCrosoFt in onlinE musiC storE
D．BEAtlEs ArE Fighting hArD to sEll thEir musiC onlinE