Marissa 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 4,400 tenant-days, but its actual level of activity was 4,450 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: Fixed element per month Variable element per tenant-day Revenue - $ 35.30 Wages and salaries $ 3,300 $ 8.30 Food and supplies 2,300 14.80 Facility expenses 8,800 3.80 Administrative expenses 7,300 0.20 Total expenses $ 21,700 $ 27.10 Actual results for March: Revenue $ 138,230 Wages and salaries $ 28,630 Food and supplies $ 69,105 Facility expenses $ 25,115 Administrative expenses $ 7,103 The overall revenue and spending variance for March would be closest to:
a) $6,513 F
b) $6,103 F
c) $6,513 U
d) $6,103 U