DEF Ltd produces a product with the following standard costs: Direct materials $10 per unit, Direct labor $8 per unit, and Factory overhead (based on machine hours, 2 hours per unit) $6 per unit. During June, the company produced 4,000 units. Actual costs were: Direct materials $40,000, Direct labor $32,000, and Factory overhead $22,000. Calculate the total variance and break it down into material, labor, and overhead variances.