Quiz to 3.1

Which statement is correct?
1. The total costs of a machine per year are increasing with increasing workload, while the average costs per hour under increasing workload are remaining constant.
2. The workload of the machine has no effect on the total cost per year, but the average costs per hour are decreasing.
3. The total costs of a machine per year are increasing with increasing workload, while the average costs per hour are decreasing with increasing load.
4. The total costs of a machine per year are remaining constant with increasing workload, while the average costs per hour are decreasing with increasing workload.