Correct option is B
Logic: Letters are decreased by 3.

Facts & Explanation (Operation-wise):
QR–TU: Q + 3 = T, R + 3 = U
FG–HL: F + 2 = H, G + 5 = L (unequal difference)
WX–ZA: W + 3 = Z, X + 3 = A (cyclic continuation)
DE–GH: D + 3 = G, E + 3 = H
Final Answer: FG–HL does not follow the same +3 pattern.
Final Correct Option: (b)