Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
ab_ _ da _ bcda _ _ cd _ _ bcd
1
bcbbaab
2
bcabbab
3
bcbbbab
4
bcbabab
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
ab_ _ da _ bcda _ _ cd _ _ bcd