Suppose you work for Moff Gideon and are working on manufacturing Dark Troopers. Moff would like an update on the budgets for the Dark Troopers, including details relating to variances for production. Consider the following for the month of March: Manufacturing overhead: Actual units produced: 9 units Actual direct labour hours: 648 hours Actual Variable Manufacturing Overhead Rate: $58 per Direct Labor Hour Actual Fixed Manufacturing Overhead $22,000 Budgeted units produced: 10 units Standard hours per unit: 70 hrs/unit Standard Variable Manufacturing Overhead Rate: $60 per Direct Labour Hour Budgeted Fixed Manufacturing Overhead: $24,000 What was the variable manufacturing overhead efficiency variance? $1,080F $4,200F $1,080U $4,200U