Select the combination of letters that when sequentially placed in the blanks will create a repetitive pattern a_c_ab/b_a_bc/_bc_ab

Show answer & explanation

Answer: (C) bccaac

Explanation

As per the official RRB key, filling b, c, c, a, a, c gives abccab / bcaabc / abccab, in which the first and third blocks are the same.