Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
A_CO_ _A_ _OST_ _CO_ _AC_ _ST
1
TSCACACSTOC
2
SACCCACOCST
3
STCACCSTOOA
4
CSTCCACSTCO
Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.
A_CO_ _A_ _OST_ _CO_ _AC_ _ST