Roye 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 September, the Kennel budgeted for 3,500 tenant-days, but Its actual level of activity was 3,550 tenant-days. The Kennel has provided the following data concerning the formulas used In Its budgeting and Its actual results for September: Data used in budgeting: Actual results for September: The revenue variance for September would be closest to