For a table having 4 columns, the number of columns to which hash function is applied when using hash indexes is __________

For a table having 4 columns, the number of columns to which hash func

1.	For a table having 4 columns, the number of columns to which hash function is applied when using hash indexes is __________
A.	1
B.	2
C.	3
D.	4
Answer» E.