1. The amount of the imprest is the same from one organization to another.

2. At the end of a fixed period, the petty cashier received a fixed sum of money.

3. At the end of a period, the petty cashier is reimbursed with the amount spent in that period.

4. The system is a method by which a measure of control is kept on petty cash expenses.

Which of the following is correct about the imprest system?