Data table Frame - It, Inc., produces several different styles and sizes of picture frames. The following activity describes Frame - It's overhead costs duning Marcht? (Click on the icon to view the averhead costs.) Read the reauirements. Requirement 1. Calculate the variable overhead rate and efficiency variances for the month of March. (Enter the variances as positive numbers. Enter the currency amount in the formulas to the nearest cent, then round the final varianco amounts to the nearest whole dollar. Label the varianco as favorable (F) or unfavorable (U).) Begin by computing the variable manufacturing overhead rate variance. First determine the formula for the rate variance, then compute the rate variance for variable manufacturing overhead