Two circles are concentric if they have the same center. 10 y 9 8 CO 7 6 5 Which equation represents a circle that is concentric with the circle shown but has a radius that is twice a large? O (x-4)+(y-6)= 4 O (x-4)+(y-6) = 16 O (x-6)+(y-4) = 16 O (x-6)+(y-4) = 4 32 2 3 4 En 5 07 6 00 X 9 10