Dermody Snow Removal's cost formula for its vehicle operating cost is $2,990 per month plus $329 per snow-day. For the month of December, the company planned for activity of 23 snow-days, but the actual level of activity was 21 snow days. The actual vehicle operating cost for the month was $10,860. The spending variance for vehicle operating cost in December would be closest to: Multiple Choice $961 F $303 U $961 U $303 F Submit