Morning Dove Company manufactures one model of birdbath, which is very popular. Morning Dove sells all units it produces each month. The relevant range is 0 to 1,800 units, and monthly production costs for the production of 1,400 units follow. Morning Doves utilities and maintenance costs are mixed with the fixed components shown in parentheses. Production Costs Total Cost Direct materials $ 2,500 Direct labor 6,700 Utilities ($140 fixed) 640 Supervisors salary 3,400 Maintenance ($330 fixed) 520 Deprecia