Four of the following five are alike in a certain way and thus form a group as per the given arrangement. Which of the following one does not belong to that group?

The person, who faces R, sits third to the right of Q. Only one person sits between Q and W. Case-2 Case-4 V sits second to the right of P, where neither of them faces Q nor sits on the extreme ends of the row.  S sits on the extreme end of the row but doesn’t face R. Here, cases 2 and 3 get eliminated. Case-1 Only one person sits between A and U, who neither sits adjacent to S nor Q. Z sits to the right of X but neither faces S and A nor sits on the extreme ends of the row. Here, case 1 gets eliminated.