Your database is open and users are connected using the LISTENER listener. The new DBA of the system stops the listener by using the following command：  LSNRCTL> STOP  What would happen to the sessions that are presently connected to the database instance？（）

• A、The sessions are able to perform only queries.
• B、The sessions are not affected and continue to function normally.
• C、The active transactions are rolled back and the sessions get terminated.
• D、The sessions are not allowed to perform any operations till the listener is started.