Kirnon Clinic uses client-visits as its measure of activity. During July, the clinic budgeted for 2,000 client-visits, but its actual level of activity was 2,010 client-visits. The clinic has provided the following data concerning the formulas to be used in its budgeting: Fixed element element per per monthclientVisit Revenue Personnel expenses $26,100 Medical supplies 1,000 Occupancy expenses 6,800 Administrative expenses 3,000 Total expenses $36,900 $43. $12. 6 1 0 $20. Variable 70 10 .30 .60 .20 20 ' The activity variance for net operating income in July would be closest ta