Considering the equation of the circle $x^2+y^2=9$  and a line $y=1$  which divides the circle in to two regions let small region be $R_1$  and other be $R_2$ .

	LIST-I		LIST-II
A)	Radius of biggest circle lying in region $R_1$	P)	$2\left(\sqrt{3}-1\right)$
B)	Radius of biggest circle lying in region  $R_2$	Q)	$\frac{3}{2}$
C)	If two circles of equal radii touching each other externally lying in region  $R_2$ then maximum value of their radii is	R)	2
D)	If the length of intercept made  by line $y=1$  on a circle which is concentric with given circle is $\sqrt{5}$  then radius of the circle is	S)	1