Company A prepared the following monthly static budget for an activity level of 5,000 units: Sales revenue $15,000 Variable expenses 9,000 Contribution margin 6,000 Fixed expenses 5,000 Operating income/(loss) $1,000 If a flexible budget was prepared at a volume of 4,000, how much would the operating income/(loss) be? $500 ($200) $1,000 $2,200