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 5,100 tenant-days, but its actual level of activity was 5,120 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: The net operating income in the planning budget for May would be closest to: $10,992 $19,853 $10,860 $19,947