Pettry Snow Removal's cost formula for its vehicle operating cost is $2,710 per month plus $408 per snow- day. For the month of December, the company planned for activity of 12 snow-days, but the actual level of activity was 13 snow-days. The actual vehicle operating cost for the month was $7,600. The vehicle operating cost in the planning (static) budget for December would be closest to: Select one: O a. $9,354 ob. $7,600 c. $7,474 O d. $8,698