McNell uses the high-low method of estimating costs. McNeil had total costs of $50.000 at its lowest level of activity, when 5,000 units were sold. When, at its highest level of activity. sales equaled 10,000 units, total costs were $78,000. What would McNeil estimate its total cost to be if sales equaled 8,000 units? Multiple Choice $66,800 $44,800 $68,267 $94.800