The equation of a tangent to the circle...

The equation of a tangent to the circle with centre `(2, -1)` is `3x + y = 0`. Twice of the square of the length of the tangent to the circle from the point `(23, 17)` is __________ .

A

`3x-y=0`

B

`x+3y=0`

C

`x-3y=0`

D

`x+2y=0`

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The correct Answer is:

C

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