Speedy Bikes Couriers Company prepared the following static budget for the year: Static budget Units/Volume 5,000 Per unit Sales revenue $7.00 $35,000 Variable costs 1.50 7,500 Contribution margin 27,500 Fixed costs 4,000 Operating $23,500 income/(Loss) If a flexible budget is prepared at a volume of 8,400, calculate the amount of operating income. The production level is within the relevant range. O $23,500 O $12,600 O $42,200 O $4,000