QUESTION 7 McNeil uses the high-low method of estimating costs. McNeil had total costs of $50,000 at its lowest level of activity, when 4,000 units were sold. When at its highest level of activity, sales equaled 12.000 units, total costs were $78,000. What would McNeil estimate its total cost to be if sales equaled 8.000 units? O $64,000 $28,000 $68,000 $92,000