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 3,900 tenant-days, but its actual level of activity was 3,880 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: Fixed Variable element element per per month tenant-day $30.40 Revenue Wages and salaries Food and supplies Facility expenses Administrative expenses $ 2,900 300 7,900 7,700 $ 18,800 $ 6.40 11.20 3.40 0.40 Total expenses $21.40 Actual results for February: Revenue Wages and salaries Food and supplies Facility expenses Administrative expenses $107,680 $ 23,490 $ 36,789 $ 19,240 $ 9,138 The net operating income in the planning budget for February would be closest to