In the figure, the circle with center A transforms to produce the circle with center A'Which transformation took place?

A. dilation about the origin by factor of 3
B. vertical stretch with respect of the x-axis by a factor of 2
C. Horizontal stretch with respect to y-axis by factor.
D. dilation about the origin by a factor of 2​

In the figure the circle with center A transforms to produce the circle with center AWhich transformation took placeA dilation about the origin by factor of 3B class=