Direction: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it.
- 
					 _ acca _ ccca _ acccc _ aaa
- 
                        - a c c a
- c a a a
- c c a a
- c a a c
 
Correct Option: B
As per given question, the letter series is following the below pattern.
c a 
After using the pattern the complete letter series will be as below.
c a / cca a / ccca a a / cccc a aaa
 
	