You executed the following command in the lsnrctl utility to stop the listener： lsnrctl> STOP L1 What is the effect of this command if L1 is the only listener configured for your database？（）
- AIt terminates all user sessions.
- BIt prevents users from logging in to the database remotely.
- CIt halts the server until all user transactions are completed.
- DThe server hangs， so users will receive an error asking them to login again.
- EConnected users would get an error with the message "End of communication channel".