The management of Delta Pet Supplies has calculated the following​ variances: Direct materials cost variance ​$8,000 U Direct materials efficiency variance ​36,000 F Direct labor cost variance ​15,500 F Direct labor efficiency variance ​12,000 U Total variable overhead variance ​7,500 F Fixed overhead cost variance ​4,000 F When determining the total production cost flexible budget​ variance, what is the fixed overhead cost variance of the​ company?