Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.

AZW : GFC : : LSM : ?

RYS

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

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THE LOGIC FOLLOWED HERE IS :

A → (+3) → G

Z → (+3) → F

W → (+3) → C

SIMILARLY

L → (+3) → R

S → (+3) → Y

M → (+3) → S