Even spaced four letter sliding blocks – UGC NET Question

Each term shifts every letter by +2: ACEG→CEGI→EGIK→GIKM. Next is GIKM shifted by +2 to IKMO.

Option A:
Option A is correct because it applies the same +2 shift to each letter and keeps the +2 internal spacing.

Option B:
Option B does not come from adding +2 to each letter of GIKM.

Option C:
Option C breaks the internal spacing because M→N is +1.

Option D:
Option D starts with J instead of I, so it is not the +2 shift continuation.