B. Berjasa bhd (BB) uses a standard costing system in their production of steel products. Since bB are more automated based production, machine hour is used as the basis in production. At the beginning of the year, BB prepared a budget based on the projection of 3,000 units to be produced which required 15,000 machine hours. Recently, BB awares on the usage of flexible budget and asked the accountant to prepare it based on the projection of 15,500 and 16,000 machine hours. The intention of doing the flexible budget is to be used in evaluating performance later. The following is the information prepared by the accountant of BB: Static Budget Flexible budget 15,000 Machine 15,500 Machine 16,000 Machine Actual cost hours hours hours (RM) (RM) (RM) (RM) Direct material DM A 126,000 130,000 134,400 135,000 DM B 39,000 40,300 41,600 41,500 Direct labor DL 1 136,500 141,050 145,600 143,500 DL 2 117,000 120,900 124,800 125,000 Overhead Maintenance 12,000 12,400 12,800 12,500 Supplies 64,500 66,750 68,800 65,000 Supervision 40,000 41,000 42,000 40,500 Inspection 72,000 73,500 75,000 73,500 Insurance 25,000 25,000 25,000 25,000 Depreciation 100,000 100,000 100,000 100,000 Additional information: 1. The actual production in the current year is 3,100 units, which consumed 16,000 machine hours. 2. The total actual fixed overhead is RM162,000. 3. Standard overhead rate is calculated using planned level of production, and BB chooses to use high low method. REQUIRED: Calculate the following variances. Indicate whether the variances are favorable or unfavorable. (a) Variable overhead spending variance. (b) Variable overhead efficiency variance. (c) Fixed overhead budget variance. (d) Fixed overhead volume variance. (4 Marks) (3 Marks) (2 Marks) (2 Marks)