Winston uses the high-low method. It had an average cost per unit of $770 at its lowest level of activity when sales equaled 10,000 units and an average cost per unit of $5.45 at its highest level of activity when sales equaled 20,000 units. What would Winston estimate its total cost to be if sales equaled 5,000 units? Multiple Choice $16.000 $45,000 . $30.000 $61000