ONE [25] The standard production cost for product BT007 for October 2023 were as follows: Material 4 kilograms at R2.50 per kilogram Labour 4 hours at R100 per hour Variable overheads R40 per labour hour Fixed overheads R48 000 Normal production 24 000 units per month Actual results for October 2023 were as follows: Material 81 000 kilograms used at R2.50 per kg Labour 78 000 hours worked at R96 per hour Variable overheads R44 per labour hour Fixed overheads R53 000 Normal production 20 000 units Required: 1.1 Calculate and comment (favourable / unfavourable) on the following variances: 1.1.1 Raw material usage variance (5) 1.1.2 Fixed overhead spending variance (5) 1.1.3 Variable overhead efficiency variance (5) 1.2 Analyse