Four of the following five are alike in a certain way based on their seating positions in the above arrangement and so form a group. Which one does not belong to the group ?

E is to the immediate right of A and G is an immediate neighbour of A, => G is to the immediate left of A.

D is sitting fifth to the right of E and F is sitting fifth to the right of A, => G is sitting at extreme left end while D is sitting at extreme right end.

B is third to the right of G, => B sits to the immediate right of E. 

H is third to the left of D, => H sits to the immediate right of B and the vacant place, i.e. between H and F is filled by C. 

Apart from B and E, there are 2 persons sitting between each of the mentioned pairs.

=> Ans - (B)