Which statement is correct about shudown and init commands?

shutdown broadcasts one or more periodic shutdown warning messages to all logged-in users whereas init issues none.

The shutdown command performs a clean shutdown of all services whereas init does not.

The shutdown command brings the system to the single-user milestone by default. The init command must be used to shut the system down to run level 0.

The shutdown command accepts SMF milestones, init stages, or run levels as arguments whereas init accepts only init stages or run levels as arguments.