Create a function first $($c$)$ which accepts as input any list $c,$ and outputs the first element in the list $c.$

Define a function first$\_$last $($c$)$ which accepts as input a list c$,$ and outputs two values, the first element and the last element of $c($in that order$).$

Define a function middle $($c$)$ which accepts as input a list c$,$ and outputs a list which is the same as c except that the first element and the last element have been removed. In other words, the function call middle $($c$)$ should drop the first and last elements of the list $c$ and return the resulting list.