Select the combination of letters that when sequentially placed in the blanks will create a repetitive pattern
c _ b b a _ c a b _ a c _ a b _ a c
1
a; c; b; c; b
2
a; b; c; b; c
3
b; a; b; c; c
4
b; c; a; c; b
Select the combination of letters that when sequentially placed in the blanks will create a repetitive pattern
c _ b b a _ c a b _ a c _ a b _ a c