The Finishing Department of Pinnacle Manufacturing Co. prepared the following factory overhead cost budget for October of the current year, during which it expected to operate at a 100% capacity of 10,000 machine hours. Variable costs: Indirect factory wages $18,000 Power and light 12,000 Indirect materials 4,000 Total variable cost $34,000 Fixed costs: Supervisory salaries $12,000 Depreciation of plant and equipment 8,800 Insurance and property taxes 3,200 Total fixed cost 24,000 Total factory overhead $58,000 During October, the plant was operated for 9,000 machine hours and the factory overhead costs incurred were as follows: indirect factory wages, $16,400; power and light, $10,000; indirect materials, $3,000; supervisory salaries, $12,000; depreciation of plant and equipment, $8,800; and insurance and property taxes, $3,200. Prepare a factory overhead cost variance report for October. (The budgeted amounts for actual amount produced should be based on 9,000 machine hours.)