Dermody Snow Removal's cost formula for its vehicle operating cost is $2,930 per month plus $323 per snow-day. For the month of December, the company planned for activity of 17 snow-days, but the actual level of activity was 16 snow-days. The actual vehicle operating cost for the month was $8,700. The spending variance for vehicle operating cost in December would be closest to: Multiple Choice $602 F $279 F O $602 U $602U $279 U