Speyer Medical Clinic measures Its activity in terms of patient-visits. Last month, the budgeted level of activity was 1,210 patient-visits and the actual level of activity was 1,200 patient-visits. The cost formula for administrative expenses is $4.50 per patient-visit plus $24,500 per month. The actual administrative expense was $23,800. In the clinic's flexible budget performance report for last month, the spending variance for administrative expenses was: Multiple Choice O $6,100F $2,470 F O O $45 F $6,145 F O