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The given series is a letter cluster series with one term missing. Choose the correct option in place of the question mark and complete the series.
Question

The given series is a letter cluster series with one term missing. Choose the correct option in place of the question mark and complete the series.
CBDA, GFHE, KJLI, ONPM, SRTQ,?

A.

WVXU

B.

YVXW

C.

XUWV

D.

XWYV

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

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