Mathematics

Problem

Match the following

Column I	Column II
(A) The circles $x^2 + y^2 + 2x + c = 0$ ( $c > 0$ ) and $x^2 + y^2 + 2y + c = 0$ touch each other, then the value of $2c$ is	(p) 1
(B) The circles $x^2 + y^2 + 2x + 3y + c = 0$ ( $c > 0$ ) and $x^2 + y^2 - x + 2y + c = 0$ intersect orthogonally, then the value of $2c$ is	(q) 2
(C) The circle $x^2 + y^2 = 9$ is contains the circle $x^2 + y^2 - 2x + 1 - c^2 = 0$ ( $c > 0$ ), then $2c$ can be	(r) 3
(D) The circle $x^2 + y^2 = 9$ is contains in the circle $x^2 + y^2 - 2x + 1 - \frac{c^2}{4} = 0$ ( $c > 0$ ), then $(c-6)$ can be	(s) 4