Galante 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 May, Kennel budgeted for 5,200 tenant-days, but its actual level of activity was 5,220 tenant-days. Kennel has provided the following data concerning the formulas used in its budgeting and its actual results for May:

Data used in budgeting:

	Fixed element per month	Variable element per tenant-day
Revenue		$31.70
Wages and salaries	$4,200	$7.70
Food and supplies	800	12.50
Facility expenses	8,600	4.70
Administrative expenses	7,600	0.50
Total expenses	$21,200	$25.40

Actual results for May:

Revenue	$108,980
Wages and salaries	$23,620
Food and supplies	$36,802
Facility expenses	$19,370
Administrative expenses	$9,164

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

$11,686

$20,024

$19,930

$11,560