Chirico Clinic uses client-visits as its measure of activity. During February, the clinic budgeted for 2,500 client-visits, but its actual level of activity was 2,550 client-visits. The clinic has provided the following data concerning the formulas used in its budgeting and its actual results for February: Data used in budgeting:

	Fixed element per month	Variable element per client-visit
Revenue		$52.30
Personnel expenses	$29,600	$15.50
Medical supplies	1,300	9.10
Occupancy expenses	8,200	2.50
Administrative expenses	6,000	0.40
Total expenses	$45,100	$27.50

Actual results for February:

Revenue	$138,875
Personnel expenses	$70,015
Medical supplies	$24,335
Occupancy expenses	$14,655
Administrative expenses	$6,880

The net operating income in the flexible budget for February would be closest to:

		$22,539
		$16,900
		$18,140
		$23,450