The equation of the tangent to the circl...

The equation of the tangent to the circle `x^2+y^2+4x-4y+4=0` which make equal intercepts on the positive co-ordinates axes is given by

A

`x+y+2sqrt2=0`

B

`x+y=2sqrt2`

C

`x+y=2`

D

`x+y=sqrt2`

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