Edward owns a hunting store that supplies most items needed in the wilderness. Currently, Edward sells bows and arrows and sells an average of one bow a month that costs an average of $250. If they discontinue the sale of the bows, they will have to stop selling the arrows as well, which they make about $500 a month on. If they were to remove the current display, they could add more room for fishing gear with an assumption that if they expand, they will increase their revenue for the fishing gear that they currently makes about $900 a month on. Using the keep-versus-drop method, should they keep or drop the bows and why?