Correct option is A
Given Series:
CBDA, GFHE, KJLI, ONPM, SRTQ, ?
Step-by-Step Logic
Observe the shift between clusters:
CBDA → GFHE
C → G (+4)
B → F (+4)
D → H (+4)
A → E (+4)
Every letter increases by +4.
Check next transitions:
GFHE → KJLI
KJLI → ONPM
ONPM → SRTQ
All follow the +4 alphabetical shift for each position.
Now apply +4 to SRTQ:
S → W
R → V
T → X
Q → U
Correct Answer: WVXU