Which statement is wrong?

1. The profit calculated by the nature of expense format is always the same as following the cost of sales format.

2. The gross profit calculated by the nature of expense format is higher than following the cost of sales format.

3. The profit calculation following the cost of sales format is best when applying Work-in-Process and Manufacturing Overhead accounts.

4. The international Accounting standards allow a company to prepare the statement of profit or loss and other comprehensive income along both formats: cost of sales format as well as nature of expense method.