Janco Industries has a relevant range extending to 31,000 units each month. The following performance report provides information about Janco's budget and actual performance for April. (Click the icon to view the performance report.) Janco Industries Flexible Budget Performance Report: Sales and Operating Expenses For the Month Ended April 30 Flexible budget Flexible Actual variance Budget Volume Variance Master Budget Output units 26,000 31,000 Sales revenue $ 251,000 $ 5,300 F Less: Variable expenses 171,600 Contribution margin Less: Fixed expenses Operating income 16,000 190,650 22,000