Hagel Clinic uses client-visits as its measure of activity. During July, the clinic budgeted for 2, 300 client-visits, but its actual level of activity was 2, 320 client-visits. The clinic has provided the following data concerning the formulas used In its budgeting and its actual results for July: Data used in budgeting: Actual results for July: The revenue variance for July would be closest to: $2, 570 F $1, 678 U $1, 628 F $2, 570 U