Correct option is C
Given - A B C _ A _ C C A B _ C _ B _ C
A B B C C
A B C A /A B C C/ A B B C/ C B C C
C A B B A
A B C C/ A A C C/ A B B C/ B B A C
C B C A C
A B C C /A B C C/ A B C C/ A B C C
provide correct logic that repeated the group of letters - ABCC
A C C B A
A B C A/ A C C C/ A B C C/ B B A C
Hence option c is correct.