please answer all 3 questions. the last attachment is the continuing of the last problem.

The standard costs and actual costs for factory overhead for the manufacture of 2,500 units of actual production are as follows: Standard Costs Fixed overhead (based on 10,000 hours) 3 hours $.80 per hour Variable overhead 3 hours $2.00 per hour Actual Costs Total variable cost, $18,000 Total fixed cost, $8,000 The amount of the factory overhead volume variance is favorable b. $2,000 unfavorable c. $2,500 unfavorable d. so The amount of the total factory overhead cost variance is a. $2,000 favorable b. $5,000 unfavorable c. $2,500 unfavorable d. so The amount of the factory overhead controllable variance is a. $2,000 unfavorable b. $3,000 favorable