A、BECAusE thEy hAvE thE right to votE AnD thEy’rE Also AllowED to go to puBs whEn thEy ArE 20.
B、BECAusE thEy CAn AttEnD spECiAl Coming-oF-AgE CErEmoniEs whEn thEy ArE 20.
C．BECAusE thEy gAin somE rights AnD nEED to tAkE somE nEw rEsponsiBilitiEs whEn thEy ArE 20.
D．BECAusE thEy’rE AllowED to smokE just likE thEir pArEnts.