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 3,300 tenant-days, but its actual level of activity was 3,280 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		$29.80
Wages and salaries	$2,300	$5.80
Food and supplies	500	10.60
Facility expenses	7,300	2.80
Administrative expenses	7,100	0.40
Total expenses	$17,200	$19.60

Actual results for May:

Revenue	$107,080
Wages and salaries	$23,430
Food and supplies	$36,783
Facility expenses	$19,180
Administrative expenses	$9,126

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

$18,467

$16,256

$18,561

$16,460