Use this information to answer the question that follow. The standard costs and actual costs for factory overhead for the manufacture of 3,000 units of actual production are as follows: Standard Costs Fixed overhead (based on 10,000 hours) 3 hours per unit 0 $0.75 per hour Variable overhead 3 hours per unit @ $1.95 per hour Actual Costs Total variable cost, $18,000 Total fixed cost, $7,900 The fixed factory overhead volume variance is Os 5600 unfavorable Ob. 5600 favorable Oc. 5750 unfavorable Od 50