Which of the following is true?
a. If the DBA changes the password for a user while the user is connected to the database, the connection terminates automatically.
b. If the DBA revokes the CREATE SESSION privilege from a user account, the user can’t connect to the database.
c. If a user is granted the privilege to create a table and the privilege is revoked after the user creates a table, the table is dropped from the system automatically.
d. All of the above