Concept:Each letter-number cluster is transformed by subtracting 2 from the first letter’s position, subtracting 4 from the second letter’s position, and adding 80 to the number.
Explanation:First pair: TK80 → RG160. T (20) - 2 = R (18), K (11) - 4 = G (7), 80 + 80 = 160.
Second pair: FR60 → DN140. F (6) - 2 = D (4), R (18) - 4 = N (14), 60 + 80 = 140.
Apply to ZW40: Z (26) - 2 = X (24), W (23) - 4 = S (19), 40 + 80 = 120.
Thus the fifth cluster is XS120.
Answer:Option A: XS120
