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Match the following according to MS-Access 2007:

1.	Cardinality	A.	Cannot contain null value.
2.	Unique key	B.	Ensures that data in the database is valid and correct.
3.	Data integrity	C.	Has eligibility to made primary key.
4.	Candidate key	D.	The number of tuples in a relation.
		E.	Can contain null value.

A)  1\[\to \]D, 2\[\to \]E, 3\[\to \]B, 4\[\to \]C

B)  1\[\to \]D, 2\[\to \]E, 3\[\to \]A, 4\[\to \]B

C)  1\[\to \]B, 2\[\to \]C, 3\[\to \]D, 4\[\to \]E

D)  1\[\to \]C, 2\[\to \]E, 3\[\to \]B, 4\[\to \]A

E)  None of these