The equation of the common tangent touch...

The equation of the common tangent touching the circle `(x-3)^2+y^2=9` and the parabola `y^2=4x` above the x-axis is `sqrt(3)y=3x+1` (b) `sqrt(3)y=-(x+3)` `sqrt(2)y=x+3` (d) `sqrt(3)y=-(3x-1)`

`sqrt(3)y = 3x+1`

`sqrt(3)y = -(x+3)`

`sqrt(3)y = x+3`

`sqrt(3)y = -(3x+1)`

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