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

C _ _ r E _ t C U r _ _ n t C _ r _ E n t

U r n r E U r

C _ _ r E _ t C U r _ _ n t C _ r _ E n t

By using options one by one . We find that only Option 4 fit well to form a repeated series .

U r n r E U r :- C U r r E n t /  C U r r E n t /  C U r r E n t

Ans = U r n r E U r