Alphabet shift analogy: “ABCD is related to OPQR” — apply the same fixed forward shift to “WXYZ” to find the matching group.

Introduction / Context:
“ABCD → OPQR” implies a constant forward shift in the alphabet. A → O is a +14 move, and the same applies to B → P, etc. Apply +14 to WXYZ.

Given Data / Assumptions:

• A(+14)→ O, B→ P, C→ Q, D→ R.
• W(+14) wraps: 23 + 14 = 37 → 37 − 26 = 11 → K.
• X→ L, Y→ M, Z→ N.

Concept / Approach:
Use modular arithmetic over 26 letters (A=1…Z=26).

Final Answer:
KLMN