Show that the equation of the circle passing through (1, 1) and the
points of intersection of the circles `x^2+y^2+13 x-13 y=0`
and `2x^2+2y^2+4x-7y-25=0`
is `4x^2+4y^2+30 x-13 y-25=0.`
A. `4x^(2)+4y^(2)-30x-10y-25=0`
B. `4x^(2)+4y^(2)+30x-13y-25=0`
C. `4x^(2)+4y^(2)-17x-10y+25=0`
D. none of these
