Four of the following are alike in a certain way and so form a group. Who among the following one does not belong to that group?

Explanation

Step-1: H sits fourth to the left of C. Five persons are sitting between B and H. From the above condition, there are two possibilities. Step-2: G sits second to the right of the one who sits third to the right of C. The number of persons sitting between B and C is the same as between G and D. D sits to the right of G. Case-3: The number of persons sitting between C and F is one more than between F and G. I sits exactly between the one who sits second to the right of F and D who sits at the extreme end. The number of persons sitting to the right of I is the same as to the left of B. E sits at the left end. From the above condition, Case-1 gets eliminated. Case-2 shows the final arrangement.