Speyer Medical Clinic Measures Its Activity in Terms of Patient-Visits

Speyer Medical Clinic measures its activity in terms of patient-visits.Last month, the budgeted level of activity was 1,530 patient-visits and the actual level of activity was 1,490 patient-visits.The cost formula for administrative expenses is $4.00 per patient-visit plus $15,300 per month.The actual administrative expense was $19,810.Last month the clinic's spending variance for administrative expenses was:

A) $820 F
B) $160 F
C) $1,450 F
D) $1,610 F