please help

Dinham 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 March, 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 March: Data used in budgeting: Actual resuits for March: The overall revenue and spending variance fie, the variance for net operating income in the revenue and spending variance column on the flexible budget performance report) for March would be closest to