Which scale drawing is a dilation that decreased the size of the original object it represents? Figure 1 is the star with scale 1:5, Figure 2 is the octagon with scale 2:0.5, Figure 3 is the triangle with scale 10:1, and Figure 4 is the pentagon with scale 1:0.1.

Figure 4, the pentagon with scale 1:0.1, is the dilation that has decreased the size of the original object it represents.