Paulis 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 4,500 tenant-days, but its actual level of activity was 4,480 tenant-days. The kennel has provided the following date conceming the formulas used in its budgeting and its actual results for February: Data used in budgeting: Actual results for February: The net operating income in the planning budget for February would be closest to: $19,485 $13,900 $3.744 $19,391