‘WISK’ is related to ‘DRHP’ in a certain way based on the English alphabetical order. In the same way, ‘LENT’ is related to ‘OVMG’. To which of the following is ‘BANG’ related, following the same logic?

Correct — B. The code is built on opposite letters, not on a shift.

Rule: A pairs with Z, B with Y, C with X … — the two position numbers always add to 27.

Check WISK → DRHP: W(23) + D(4) = 27, I(9) + R(18) = 27, S(19) + H(8) = 27, K(11) + P(16) = 27.

LENT → OVMG does the same: L→O, E→V, N→M, T→G.

Now BANG:

B(2) → Y(25)
A(1) → Z(26)
N(14) → M(13)
G(7) → T(20)

That spells YZMT — option (b).

Why the others are wrong

• (a)
  ZYNS — ZYNS never holds the sum: B + Z = 28, A + Y = 26, N + N = 28, G + S = 26. Only a constant 27 gives the opposite letter.
• (c)
  ZYLU — ZYLU opens with the pair reversed and then misses twice more: N + L = 26 and G + U = 28. Every position has to land on 27 exactly.
• (d)
  YZNU — YZNU gets B → Y and A → Z right, then slips one place on the second half: N + N = 28 and G + U = 28, where the code demands 27.

Opposite-letter coding is the second common alphabet trick after a plain shift. Each letter is replaced by its partner counted from the far end: A with Z, B with Y, C with X, down to M with N.

The arithmetic test is a single line — the position numbers of a letter and its opposite always add to 27. That one sum checks any pair in a second, with no reciting of the alphabet.

Learn the position numbers in both directions, forwards from A and backwards from Z.

Key facts

• A letter and its opposite have position numbers adding to 27, as A(1) with Z(26) and M(13) with N(14).
• WISK maps to DRHP and LENT maps to OVMG under that single rule.
• BANG maps to YZMT: B to Y, A to Z, N to M, G to T.

Common traps

• Writing Z for B and Y for A, which is the right rule on the wrong letters.
• Assuming a fixed shift because the first mapped pair looks like a jump of a few places.
• Leaving N unchanged because M and N sit together in the middle of the alphabet.

No directly related past PYQ was found.