Select the option that represents the letters that, when sequentially placed from left to right in the blanks, will complete the letter series.

w _ l l _ g _ w e _ l n _ k _ e _ l _ g k

e n k l g w l n

w _ l l _ g _ w e _ l n _ k _ e _ l _ g k

The logic followed here is :

w e l l n g k / w e l l n g k / w e l l n g k

Hence (e n k l g w l n ) is Correct answer