8/3,4/5,4/31,( )
A.2/47;B.3/47;C.1/49;D.1/47;
2,3,6,8,8,4,()A.2 B.3 C.4 D.5
2,3,6,8,8,4,() A.2 B.3 C.4 D.5
2,3,6,8,8,4,() A.2 B.3 C.4 D.5
2,3,6,8,8,4,()() A.2 B.3 C.4 D.5
3,6,8,8,4,()A.2 B.3 C.4 D.5