Option (A) : All the given letters are continous in albhabetical series. A, B, C, D, E.
Option (B) : All the given letters are continous in albhabetical series. G, H, I, J, K.
Option (C) : All the given letters are continous in albhabetical series. P, Q, R, S, T.
Option (D) : All the given letters are not continous in albhabetical series. T, (U missing), V, W, (X missing), Y, Z.
Hence the answer is option D.