The standard costs and actual costs for factory overhead for the manufacture of 2,900 units of actual production are as follows: Fixed overhead (based on 10,000 hours) Variable overhead Actual Costs Total variable cost, $17,800 Total fixed cost, $8,200 The total factory overhead cost variance is C. $-296 unfavorable Ob. $1,680 favorable Oc. $692 unfavorable Od. $692 favorable Standard Costs 3 hours per unit at $0.76 per hour 3 hours per unit at $2.08 per hour