Which of the following internal control activities will most likely prevent the concealment of a cash shortage by improperly writing off a trade account receivable?

Group of answer choices

Write-offs must be approved by the cashier who is in a position to know if the receivables have, in fact, been collected.

Write-offs must be approved by a responsible officer after review of credit department recommendations and supporting evidence.

Write-offs must be supported by an aging schedule showing that only receivables overdue several months have been written off.

Write-offs must be authorized by company field sales employees who are in a position to determine the financial standing of the customers.