The locus of the centers of t he circles...

The locus of the centers of t he circles which cut the circles ` x^(2) + y^(2) + 4x - 6y + 9 = 0 and x^(2) + y^(2) - 5x + 4y - 2 = 0 ` orthogonally is

A

`9x + 10 y - 7 = 0 `

B

` x - y + 2 = 0 `

C

` 9x - 10 y + 11 = 0 `

D

` 9 x + 10 y + 7 = 0 `

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The correct Answer is:

C

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