Crovo Corporation uses customers served as its measure of activity. During December, the company budgeted for 46,000 customers, but actually served 48,000 customers. The company has provided the following data concerning the formulas used in its budgeting and its actual results for December: Data used in budgeting: Fixed element per month Revenue Wages and salaries Supplies Insurance Miscellaneous $20,700 $ 0 $ 7,700 $ 3,700 Variable element per customer $2.60 $0.93 $0.58 $0.00 $0.38 Actual results for December: Revenue $120,300 Wages and salaries $ 54,000 Supplies $ 25,940 $ 9,700 Insurance Miscellaneous 25,940 Required: Complete the report showing the company's revenue and spending variances for December (Input all amounts as positive values. Leave no cells blank - be certain to enter "O" wherever required. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Omit the "$" sign in your response.) Crovo Corporation Revenue and Spending Variances For the Month Ended December 31 $ (Click to select) Revenue =) Expenses: Wages and salaries Supplies Insurance Miscellaneous (Click to select) ((Click to select) ( (Click to select) (Click to select) ) - ) Total expense (Click to select) Net operating income (Click to select)