A _________________ index is the one which satisfies all the columns requested in the query without performing further lookup into the clustered index.$

A _________________ index is the one which satisfies all the columns r

1.	A _________________ index is the one which satisfies all the columns requested in the query without performing further lookup into the clustered index.$
A.	Clustered
B.	Non Clustered
C.	Covering
D.	B-Tree
Answer» D. B-Tree