Blackwelder Snow Removal's cost formula for its vehicle operating cost is $1,240 per month plus $348 per snow-day. For the month of December, the company planned for activity of 12 snow-days, but the actual level of activity was 14 snow- days. The actual vehicle operating cost for the month was $6,330. The vehicle operating cost in the planning budget for December would be closest to: Select one: a. $6,330 b. $6,112 0 c. $5,416 d. $5,426