The standard costs and actual costs for direct materials for the manufacture of 2,500 actual units of product are as follows: 2,500 kilograms $8.50 Standard Costs Direct materials (per completed unit) Actual Costs Direct materials 2,600 kilograms $8.75 The direct materials quantity variance is Os 5130 ontwerable variance Ob stable viance Oc75 fevrable variance Od stuvenable variance