The pattern followed after filling all the blanks.
(A) : a b ab a b a b a b a b
(B) :Â b a a b a a b b a b a b
(D) :Â b b a b a a b b a a a b
If we look carefully, we can find only first option making a pattern, ab/ab/ab/ab/ab/ab
=> Ans - (A)
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