Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
_c_d d_c a_c b d d b_a
1
abcac
2
caddb
3
abbac
4
cdaba
5
cdccb
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
_c_d d_c a_c b d d b_a