4 Which of the following statement is INCORRECT O Fixed costs per unit change inversely with the level of production. O The direct/indirect cost classification depends on the choice of the cost object O Variable costs change, in total, in proportion to changes in the related level of activity or volume of output produced O Inventoriable costs are treated as expenses of the accounting period in which they are incurred Question 7 Which of the following approach used to dispose under allocated or overallocated overheads through spreading c inventory, and cost of goods sold? O The proration approach O The adjusted allocation-rate approach Write-off approach O Cost accumulation approach