Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
a_dc_aad_ _ca_dd_ca
1
dcdcac
2
dcdcab
3
adadac
4
cddcac
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
a_dc_aad_ _ca_dd_ca