Directions:- Study the following information carefully to answer the question given below.
(i) There are 8 friends A, B, C, D, E, F, G, H seated in a circle facing the centre.
(ii) A and C, D and G, H and E and F and B are seated adjacent to each other. A is also seated adjacent to H.
(iii) B is 2nd to the right of H.
(iv) E is 3rd to the right of C.
Who among the following pairs may not be seated adjacent to each other?