The criteria for selecting a primary key for a table:
A. It must uniquely identify the row.
B. It cannot have NULL value.
C. It can have NULL value.
D. It can have duplicate values.
E. It never uniquely identifies the row.
Choose the correct answer from the options given below:
1
A and B only
2
C and D only
3
B and E only
4
A and E only