AB is chord of the circle $x^2+y^2=25$ whose middle point is M. Then match the following loci of M under various conditions

COLUMN - I		COLUMN - II
A)	When AB subtends 60º at centre	p)	$x^2+y^2+2y=0$
B)	When AB always passes through (0, –2)	q)	$x^2+y^2=9$
C)	When AB has constant length 8	r)	$x^2+y^2=75/4$
D)	When AB subtends 45o on the circumference of the circle	s)	$2\left(x^2+y^2\right)=25$

	A	B	C	D
1)	r	p	q	s
2)	s	q	p	r
3)	q	s	r	p
4)	p	r	s	q