You are using a system running in single user mode and want to turn it off. Which three commands bring the system to a state where you can safely turn off the power? (Choose three)

A.
halt

B.
init 3

C.
init 5

D.
reboot

E.
poweroff

F.
reboot — -r

Explanation:

Answers D and F reboots the system to the default init state 3 Answer B boots the system to the default.
The command reboot — -r passes the flag r to the OBP, which is a re-boot.