please explain why its true or false

__Under the allowance method, the cash realizable value of accounts receivable is the same both before and after an account has been written off. The following is an internal control procedure at Clark Company: employees who have physical custody of assets do not have access to the accounting records. This is an example of the establishment of responsibility principle of internal control. In a period of falling prices, the LIFO method results in a higher net income than the FIFO method. A journal entry is made to the Petty Cash account when establishing the fund and when replenishing the fund