Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group?
(Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

Correct option is C

Logic Each letter in the pair is shifted–1
Option (A): DS – CR
D (4) → C (3) → –1
S (19) → R (18) → –1
Both letters shift –1
Option (B): GK – FJ
G (7) → F (6) → –1
K (11) → J (10) → –1
Both letters shift –1
Option (C): LR – JP
L (12) → J (10) → –2
R (18) → P (16) → –2
Both shift –2 — pattern differs from others
Option (D): WH – VG
W (23) → V (22) → –1
H (8) → G (7) → –1
Both letters shift –1
Final Answer: (C) LR – JP