Four letter groups with step of three – UGC NET Question

Starting letters D(4), G(7), J(10), M(13) increase by +3. Next start is P(16), giving PQRS.

Option A:
Option A is correct because P is +3 from M and Q,R,S follow consecutively.

Option B:
Option B starts at Q (+4 from M), not +3.

Option C:
Option C starts at R (+5 from M), not +3.

Option D:
Option D starts at O (+2 from M), not +3.