Find the equation of the tangent to the ...

Find the equation of the tangent to the circle `x^2+y^2+4x-4y+4=0` which makes equal intercepts on the positive coordinates axes.

A

`x+y=2`

B

`x+y=sqrt(2)`

C

`x+y=2sqrt(2)`

D

None

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The correct Answer is:

C

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