Pleaselistentothevideointhewebsiteontheissueofsocialmediaandthenanswerthefollowingquestions.Accordingtowhatyouhavewatchedfromthevideo,itispossiblethatsocialmediais（）。
A. double-edged
B. mostlywelcomedbyelderpeople
C. dislikedbyyoungpeople
D. welcomedbyalltheyoungkids
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