Concept:The same operation is applied to the first number to get the second number.Here, the operation is: first number ×2+3= second number.Explanation:For X:49, the relation is:X×2+3=49X×2=49−3=46X=46÷2=23For 17:Y, apply the same operation:17×2+3=34+3=37So, Y=37.Answer:X=23, Y=37Correct option: A.