1. You have been given the following expenses from the database of XYZ Manufacturer at different level of activity within the relevant range: Expenses Factory Rent Factory Supplies Maintenance 5,000 Units $20,000 $10,000 $12,000 Required: Based on the above information: 10,000 Units $20,000 $20,000 $18,000 a) Classify the above expenses into fixed, variable and mixed category (1 mark) b) Compute per unit (only variable part) maintenance expense (2 Marks)