Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the letter-cluster that is different.

GBTV

1   2    3    4   5    6   7     8    9  10  11  12  13

 A   B   C    D   E    F   G    H    I    J    K    L   M

 ↓    ↓    ↓    ↓    ↓     ↓   ↓    ↓     ↓   ↓    ↓    ↓    ↓

 Z   Y    X   W   V    U   T    S    R   Q   P    O   N

26  25  24  23  22  21  20  19  18  17  16  15  14

THE LOGIC FOLLOWED HERE IS;

(1st and 3rd, 2nd and 4th words are opposite)

1) DJWQ,

D → OPPOSITE → W

J → OPPOSITE → Q

2) GBTV,

G → OPPOSITE → T

B → OPPOSITE Y not V

3) CGXT,

C → OPPOSITE → X

G → OPPOSITE → T

4) HDSW,

H → OPPOSITE → S

D → OPPOSITE → W

Thus, GBTV is the odd one.