Gourley clinic uses client-visits as its measure of activity. During August, the clinic budgeted for 3, 500 client visits, but its actual level of activity was 3, 410 client visits. The clinic has provided the following data concerning the formulas to be used in its budgeting: The activity variance for net operating income in August would be closest to: exist951 F exist1, 701 F exist1, 701 U exist954 U