Select the letter cluster which does not belong to the same group from the given alternatives.

The pattern followed here is: The 2nd letter is the 5th succeeding letter of the 1st letter, the 3rd letter is the 2nd succeeding letter of the 2nd letter as per the English alphabetical series. In option 'A', 'NSU': 1st letter = N, 2nd letter = N + 5 = S, 3rd letter = S + 2 = U In option 'B', 'AFH': 1st letter = A, 2nd letter = A + 5 = F, 3rd letter = F + 2 = H In option 'C', 'HMP': 1st letter = H, 2nd letter = H + 5 = M, 3rd letter = M + 2 = O ≠ P In option 'D', 'UZB': 1st letter = U, 2nd letter = U + 5 = Z, 3rd letter = Z + 2 = C