# The equation of a circle with centre $(4, 1)$ and having $3x + 4y - 1 =0$ as tangent is
( A ) $x^2 + y^2-8x-2y+8=0$
( B ) $x^2 + y^2-8x-2y-8=0$
( C ) $x^2 + y^2-8x-2y+4=0$
( D ) $x^2 + y^2-8x+2y-8=0$