Lavage Rapide is a Canadian company that owns and operates a large automatic car wash facility near Montreal. The following table provides estimates concerning the company's costs: Fixed Cost per Month Cost per Car Washed Cleaning supplies $ 0.50 Electricity $ 1,200 $ 0.07 Maintenance $ 0.25 Wages and salaries $ 4,700 $ 0.30 Depreciation $ 8,400 Rent $ 2,000 Administrative expenses $ 1,400 $ 0.03 For example, electricity costs should be $1,200 per month plus $0.07 per car washed. The company expects to wash 8,400 cars in August and to collect an average of $6.50 per car washed. The company actually washed 8,500 cars in August. Required: Calculate the company's activity variances for August. Note: Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.