Hemp 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 December, the kennel budgeted for 3,000 tenant days, but its actual Level of activity was 3,050 tenant days. The kennel has provided the following data concerning the formulas to be used in its budgeting. The net operating income in the planning budget for December would be closest to: a$1 3,420 b. $12,020 c. $12,984 d. $11,5001