Your database is open and the LISTENER listener is running. The new DBA of the system stops thelistener by using the command：  LSNRCTL> STOP  What happens 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 sessions are terminated and the active transactions are rolled back.
• D、The sessions are not allowed to perform any operations till the listener is started.