If a circle passes through the point (a,...

If a circle passes through the point `(a, b)` and cuts the circle `x^2 +y^2=k^2` orthogonally, then the equation of the locus of its center is

A

`2ax+2by+(a^2+b^2+k^2)=0`

B

`2ax+2by+(a^2+b^2-k^2)=0`

C

`2ax+2by+(a^2+b^2+k^2)=0`

D

none of the above

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The correct Answer is:

A

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