Fill in the missing amounts for (a) and (b) in the following graph. Flexible budget line Flexible budget - $ 90,000 Operating profit Master budget $ 32,000 $0 Units sold Flexible budget activity (b) Operaing loss Master budget activity 2,000 units Slope = Contribution margin per unit = (a) Fixed costs - $ 200,000 per unit (a) Contribution margin (b) Flexible budget activity units