I. Inventory is reported at market value when cost is lower.

2. Computers costing less than \($1,000\) are immediately expensed even though their useful life is three years.

3. The auditors of Dietrich Co. found an error of \($50\) in its financial statements and decide to restate their financial statements; Dietrich has sales revenue of \($15\) million.

4. To appropriately account for the pension liability, Ziebart Co. installs an abnormally expensive system to track employees, their health, and their pension status. Ziebart argues that this system is necessary to comply with accounting guidelines.

Indicate the accounting constraint, if any, that is violated by each practice.