Answer: The correct option is (A) 6.
Step-by-step explanation: We are given to find the scale factor of dilation from triangle ABC to triangle XYZ.
From the figure, we note that
The lengths of the sides of triangles ABC and XYZ are as follows :
AB = 5 units, BC = 4 units, AC = 3 units, XY = 30 units, YZ = 24 units and XZ = 18 units.
We know that

Therefore, for the given triangles, we get

Thus, the required scale factor of dilation is 6.
Option (A) is CORRECT.