Paulis Kennel uses tenant-days as lis measure of activity; an animal housed in the kennel for one day is counted as one tenant day. Duriig February, the kennel budgoted for 5,400 tenant-days, but its actual level of activity was 5,420 tenant-days. The kennel has provided the following data concerring the formulas used in its budgeting and its actual results for February: Data used in budgeting: Actual results for February; The activity variance for net operating income in February would be closest to: $8,198 $8,198F $124U $124F