You have just been hired by FAB Corporation, the manufacturer of a revolutionary new garage door opening device. The president has asked that you review the company's costing system and "do what you can to help us get better control of our manufacturing overhead costs." You find that the company has never used a flexible budget, and you suggest that preparing such a budget would be an excellent first step in overhead planning and control. After much effort and analysis, you determined the following cost formulas and gathered the following actual cost data for March: Actual Cost Cost Formula in March $16,400 plus $0.16 per machine-hour 21,400 Utilities Maintenance $38,900 plus $1.50 per machine-hour 62,700 $0.70 per machine-hour 13,800 Supplies Indirect labor $94,100 plus $1.60 per machine-hour 127,000 69,600 Depreciation $67,900 During March, the company worked 18,000 machine-hours and produced 12,000 units. The company had originally planned to work 20,000 machine-hours during March Required: 1. Complete the report showing the activity variances for March. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance) Input all amounts as positive values.) FAB Corporation Activity Variances For the Month Ended March 31 F Utilities F Maintenance F Supplies F Indirect labor Depreciation None F Total