# Equation of a common tangent to the circle, x^2 + y^2 − 6x = 0 and the parabola, y^2 = 4x, is :

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Equation of a common tangent to the circle, $x^2+y^2-6x=0$ and the parabola, $y^2=4x$, is :

(1) $2\sqrt3y=12x+1$

(2) $2\sqrt3y=-x-12$

(3) $\sqrt3y=x+3$

(4) $\sqrt3y=3x+1$