Stopyra Incorporated makes a single product--a cooling coil used in commercial refrigerators. The company has a standard cost system in which it applies overhead to this product based on the standard labor-hours allowed for the actual output of the period. Data concerning the most recent year appear below: Budgeted variable manufacturing overhead Budgeted fixed manufacturing overhead Budgeted hours Actual production (a) Standard hours per unit (b) Standard hours allowed for the actual production (a) x (b) Actual variable manufacturing overhead Actual fixed manufacturing overhead Actual hours The variable overhead efficiency variance is: $ 28,200 $ 89,280 12,000 labor-hours 16,000 units 0.60 labor-hours 9,600 labor-hours $ 26,967 $ 74,280 8,900 labor-hours Multiple Choice $2,121 F $1,645 F $1,645 U $2,121 U