An Autonomous Database (ADB) user with an instance wallet has left the company and they shared a database user id with other users when accessing ADB. Other than changing the shared user password, what can the admin do to protect the instance? (Choose the best answer.) 

Answer options:

A. Delete the user.
B. Rotate the instance wallet and share the new wallet with the remaining users.
C. Shutdown and restart the instance.
D. Trust the user who left to not access the database.

B