Wales 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 2,700 tenant-days, but its actual level of activity was 2,730 tenant-days. The kennel has provided the following data concerning the formulas to be used in its budgeting:

	Fixed element per month	Variable element per tenant-day
Revenue		$31.70
Wages and salaries	$2,100	$7.70
Food and supplies	900	11.20
Facility expenses	8,500	2.70
Administrative expenses	6,700	0.10
Total expenses	$18,200	$21.70

The administrative expenses in the planning budget for February would be closest to:

$6,639

$6,973

$6,970

$6,713