Concept:The second number is obtained by applying the same mathematical operation to the first whole number in each pair.Explanation:The pattern is: second number = first number × (first number −3) +4.For X=12: 12×(12−3)+4=12×9+4=108+4=112.So the left pair becomes 12:112.For the right pair, first number is 15: 15×(15−3)+4=15×12+4=180+4=184.Thus, Y=184.This matches option B only.Answer:X=12, Y=184⇒ Option B.