Seed Help Save & Ex Assume that a company provided the following cost formulas for three of its expenses (where refers to the number of hours workedy: Rent (fixed) Supplies (variable) Utilities (mixed) $3,000 $4.009 $150 + $0.750 The company's planned level of activity was 2,000 hours and its actual level of activity was 1,895 hours. The actual amount of supplies expense for the period was $7.800. What is the activity variance for supplies expense? Multiple Choice $420 F O $4200 O $200 F