Circle

In the List-I each item contains equations of two circles, List-II contains the number of common tangents for each pair of circles given in List-I. Match the items of List-I with those of the items of List-II

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\( \text { List-I } \)		\( \text { List-II } \)
A.	$$ \begin{aligned} & x^2+y^2+2 x+8 y-23=0 \\ & x^2+y^2-4 x-10 y+19=0 \end{aligned} $$	I.	0
B.	$$ \begin{aligned} & x^2+y^2=1 \\ & x^2+y^2-2 x-6 y+6=0 \end{aligned} $$	II.	1
C.	$$ \begin{aligned} & x^2+y^2-8 x+2 y=0 \\ & x^2+y^2-2 x-16 y+25=0 \end{aligned} $$	III.	2
D.	$$ \begin{aligned} & x^2+y^2=4 \\ & x^2+y^2-2 x=0 \end{aligned} $$	IV.	3
		V.	4

\(\text { The correct match is }\)