$5\mathrm{.}6($Functions Returning Tuples$)$ Define a function rotate that receives three arguments and returns a tuple in which the first argument is at index $1,$ the second argument is at index $2$ and the third argument is at index $0.$ Define variables a$,$ b and c containing 'Doug', $22$ and $1984.$ Then call the function three times. For each call, unpack its result into $a,b$ and $c,$ then display their values.