A small clinic in a small town treats only 10 patients. It expects operating cost per patient will be $1,800, or total $18,000. It also desires an operating margin of $3600. If the clinic treats one patient as a charity case, because he is unable to pay, how much must the clinic charge the other nine patients in order to reach its total financial requirements? O $2,400 O $2,000 $2,160 O $2,500