Taft Manufacturing Corporation uses a standard cost system with machine-hours as the activity base for overhead. The following information relates to production for last year. Total budgeted overhead (at the denominator level of activity) Total applied overhead Total actual overhead Variable Fixed $ 432,000 $ 684,000 $ 425,600 $ 649,800 $ 456,000 $ 655,500 The standard machine-hours allowed for the actual output during the year were 7,600. The actual machine-hours incurred were 7,500. 11 What was Taft's variable overhead efficiency variance? A $ 30,400 Unfavorable B. $ 36,000 Unfavorable C. S 6,400 Favorable D. $ 5,600 Favorable E. None of the above