why is circle 1 similar to circle 2

circle 1 center (0, 9) and radius 14

circle 2 center (0,9 and radius 7


A circle 1 is a dilation of circle 2 with a scale factor of 2

B circle 1 and circle 2 have the same center

C circle is a dilation of circle 2 with a scale factor of 7

D circle 1 is a translation of circle 2