Paulis Kennel uses tenant-days as its measure of activity, an animal housed in the kennel for one day is counted as one tenant-day. During February, the kennel budgeted for 4,600 tenant-days, but its actual level of activity was 4,580 tenant-days. The kennel has provided the following data concerning the formulas used in its budgeting and its actual results for February Data used in budgeting: 21 Fixed Variable element element per per month tenant-day $31.10 Revenue $ 7.10 11.90 4.10 Wages and salaries Food and supplies Facility expenses Administrative expenses Total expenses $ 3,600 200 8,600 8,400 $20,800 0.50 $23.60 Actual results for February Revenue Wages and salaries Food and supplies Facility expenses Administrative expenses $108,380 $ 23,560 $ 36,796 $ 19,310 $ 9,152 The overall revenue and spending variance (ie., the variance for net operating income in the revenue and spending variance column on the flexible budget performance report) for February would be closest to