Which one of the options would fulfill the requirement?

The OS user BOB is a member the osoper OS group in the database server. You want BOB:

1) To be able to connect “/ as sysdba”
2) To be authenticated by the operating system (OS)

Which one of the options would fulfill the requirement?

A.
Assign the sysdba privilege to BOB.

B.
Assign the osdba OS group to BOB.

C.
Set the REMOTE_LOGIN_PASSWORDFILE initialization parameter to SHARED.

D.
Set the REMOTE_LOGIN_PASSWORDFILE initialization parameter to EXCLUSIVE.