Four of the following five are similar in some way. Identify the one which is not same as the other four and mark it as your answer.

Eight people are sitting in a straight line. Let us number the positions as 1 to 8 from left to right. A is second to the right of C and third to the left of H. Moreover, H is not sitting at an end position. So, the possibilities for C, A and H are 2, 4, 7 or 1, 3, 6. If they are sitting at 2, 4,7, then D and G must be sitting at 5 and 6. Now, F is not sitting at an end position, so the only possible place for him will be 3. In this case E will have to sit at 1. But contradicts the given information. Hence, this is not possible. Thus, C, A and H must be sitting at 1, 3 and 6 respectively. D and G can be 4/5 or 7/8. But in case of 7/8, there won’t be more people to the right of G then his left. Hence G must be fourth, D must be fifth. E must be 2. B should be at 8 and F should be at 7. Thus, we will have the following arrangement