You would like to completely shut down a system (without rebooting) 10 minutes after notifying all users of your intent. Which of the following commands should you enter at the shell prompt? answer shutdown 10 -h "System will shut down in 10 minutes" shutdown -r +10 "System will shut down in 10 minutes" shutdown -p 10 "System will shut down in 10 minutes" shutdown +10 -h "System will shut down in 10 minutes"