If $(1,2)$ is a limiting point of a co-axial system of circles containing the circle $x^2 + y^2 + x - 5y + 9 =0$, then the equation of radical axis is :

Question

( A ) $x+ 3y + 9 =0$
( B ) $3x-y+4=0$
( C ) $x+9y-4=0$
( D ) $3x-y-1=0$