A circle is concentric with the circle x...

A circle is concentric with the circle `x^2+y^2-6x+12y+15=0` and has area double of its area. The equation of the circle is

A

`x^2+y^2-6x+12y-15=0`

B

`x^2+y^2-6x+12y+15=0`

C

`x^2+y^2-6x+12y+45=0`

D

`x^2+y^2-6x+12y-45=0`

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