A. 2, (5, 2)

B. 4, (2, 1)

C. 10, (8, 4)

D. 11, (13, 11)

For the circle x^{2}+y^{2}-2x-4y-4=0 the lines 2x+3y-1=0, 2x+y+5=0 are

If a tangent drawn from the point (4, 0) to the circle x^{2}+y^{2}=8 touches it at a point in the first quadrant, then the coordinates of another point B on the circle such that AB=4 are

For the circle x^{2}+y^{2}-6x-6y+5=0 the lines 3x+y-2=0, x+7y-11=0 are

The condition that the circles x^{2}+y^{2}+2ax+c=0, x^{2}+y^{2}+2by+c=0 may touch each other is

If the circles described on the line joining the points (0, 1) and (α, β) as diameter cuts the axis of x in points whose abscissa are the roots of the equation x^{2}-5x+3=0, then (α, β)=