Taussig Snow Removal's cost formula for its vehicle operating cost is $1,880 per month plus $394 per snow-day. For the month of February, the company planned for activity of 13 snow-days, but the actual level of activity was 14 snow-days. The actual vehicle operating cost for the month was $7,250. The activity variance for vehicle operating cost in February would be closest to:

$394 F

$248 U

$394 U

$248 F