The static budget, at the beginning of the month, for Divine Dcor Company, follows: Static budget: Sales volume: 1500 units; Sales price: $70.00 per unit Variable costs: $32.00 per unit; Fixed costs: $38,000 per month Operating income: $19,000 Actual results, at the end of the month, follows: Actual results: Sales volume: 990 units; Sales price: $75.00 per unit Variable costs: $35.00 per unit; Fixed costs: $33,000 per month Operating income: $6600 Calculate the flexible budget variance for sales revenue. $6980 F $6980 U $4950 U $4950 F