Let a dilation be defined by a scale factor s and center of dilation (a, y). Each of the options below represents a dilation of a polygon according to the given values of s, x, and y. Which of the following dilations produce an image congruent to its pre-image. Select all that apply. O s = 0, x = 0,y =0 O s = 0,x = 1,y=1 O s = 1,x = 0,y = 3 O s = 1, x = 2,y = 0 O s = 2, x = 1,y=0 O s = 2, x = 0, y =0