Kropf Inc has provided the following data concerning one of the products in its standard cost system. Variable manufacturing overhead is applied to products on the basis of direct labor-hours. Standard Quantity or Inputs Hours per unit of Output Standard Price or Rate Direct materiais 9.30 liters $ 8.90 per liter Direct labor 8.70 hours $25.70 per hour Variable manufacturing overhead 2.70 hours $ 7.50 per hour The company has reported the following actual results for the product for September Actual output Raw materials purchased Actual cost of raw materials purchased Rant materials used in production Actual direct labor-hours Actual direct labor cost Actual variable overhead cost 11, see units 107,900 liters $979,5ee 106,980 liters 7.750 hours $205,302 $ 55,414 Required: a Compute the materials price variance for September b. Compute the materials quantity variance for September c. Compute the labor rate variance for September d. Compute the labor efficiency variance for September, e. Compute the variable overhead rate variance for September f Compute the variable overhead efficiency variance for September (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (.o., zero variance). Input all amounts as positive values.) 08 a Materials price variance b. Materiais quantity variance Labor ale varianco dLabor efficiency variance Variable overhead tate variance 1 Variable overhead licency variance