Paradiso Medical Clinic measures its activity in terms of patient-visits. Last month, the budgeted level of activity was 1,230 patient-visits and the actual level of activity was 1,220 patient-visits. The cost formula for administrative expenses is $4.70 per patient-visit plus $25,500 per month. The actual administrative expense was $24,400. In the clinic's flexible budget performance report for last month, the spending variance for administrative expenses was:

$6,834 F

$2,770 U

$47 F

$6,881 F