Bartosiewicz Clinic uses client-visits as its measure of activity, During January, the clinic, budgeted for 4,700 client visits, but its actual level of activity was 4,680 client-visits. The clinic has provided the following data concerning the formulas used in its budgeting and its actual results for January. Data used in budgeting: Actual results for January: The overall revenue and spending variance (l,e, the variance for net operating income in the revenue and spending variance column on the llexible butget performance report) for January would be closest to