In the following query “person_id” can be SELECT person_id, fname,l name, Birth_data FROM person WHERE person_id=1;

Only Attribute but not a primary Key

Primary Key or any other Attribute

In the following query “person_id” can be SELECT person_id, fname

1.	In the following query “person_id” can be SELECT person_id, fname,l name, Birth_data FROM person WHERE person_id=1;
A.	Only Primary Key
B.	Primary Key or any other Attribute
C.	Only Attribute but not a primary Key
D.	None of the mentioned
Answer» C. Only Attribute but not a primary Key