Match the following:

	List I (Laws of Boolean)		List II (Relation algebra)
A.	Distributive law	1.	x + x = x
B.	DeMorgans law	2.	x(y + z) = xy + xz
C.	Idempotent law	3.	(x) = x
D.	Involution law	4.	(x + y) = xy