4,18,48,100,180,()。
A.343
B.392
C.294
D.448
0,4,18,48,100,() A.140;B.160;C.180;D.200;
0,4,18,48,100,() A.170;B.180;C.190;D.200;
0,4,18,48,100,() A.140;B.160;C.180;D.200;
:0,4,18,48,100,()。A.140 B.160 C.180 D.200
0 4 18 48 100 ()A.140 B.160 C.180 D.200