Which of the following commands creates a shortcut that can be used to run the tail $-$f $/$var$/$log$/$messages command?

answer

env alias$=$"tail $-$f $/$var$/$log$/$messages$"$

alias sysmesg$=$"tail $-$f $/$var$/$log$/$messages$"$

export alias$=$"tail $-$f $/$var$/$log$/$messages$"$

export sysmesg$=$"tail $-$f $/$var$/$log$/$messages$"$