Direction: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
- 
					 a—bbc—aab—aa—abba—
- 
                        - cabaa
- bacba
- bbaaa
- aabba
 
Correct Option: A
Here the letter series is as follows :-
acb 
After using the pattern the complete letter series will be as below.
acb / bca / aab / baa / aab / baa 
 
	