Mr$.$ Barton's fifth$-$grade class has just entered the cafeteria for lunch. Which of the following statements about forming a "lunch line" will most likely promote a positive relationship between him and his students?

"You better make a line if you want to go outside after lunch."

$"$If you don't line up properly, we'll go back to the classroom."

"Remember our rule about lining up when we enter the cafeteria."

$"$I$\text{'}$m sick and tired of your inability to form a line."