1,4,11,30,85,()
A.248
B.250
C.256
D.260
1,4,ll,30,85,()A.248 B.250 C.256 D.260
1,4,11,30,85,()A.248 B.250 C.256 D.260
1,4,11,30,85,() A.248 B.250 C.256 D.260
1/4 3/10 () 2/5 A.23/50 B.17/40 C.11/30 D.7/20
1,4,11,30,85,() A.248B.250C.256D.260