What is the best technique to use when members of the Marketing group need to use a shared user id and password to access tables in an Oracle database?

What is the best technique to use when members of the Marketing group need to use a shared user id and password to access tables in an Oracle database?
A . Create a global caslib to the Oracle database and specify the shared user id, the password, and the Marketing group identity in a conditional grant.
B . Create an authentication domain for the Oracle database and store the shared user id and the password for the Marketing group identity.
C . Create a Custom Group for members of the Marketing group and specify the shared user id and the password in the Custom Group properties.
D . Create a data connection to the Oracle database and specify the shared user id, the password, and the Marketing group identity in the connection properties.

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Answer: B