Choose from the list below the best control activity to prevent unauthorized purchase orders submitted to an unauthorized vendor that may result in unauthorized or fraudulent purchases.

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Group of answer choices

Separate the duties of ordering goods from receiving, payment, and accounting responsibilities.

An authorized person from the department making the request must approve the purchase order.

Prenumber and account for purchase requisitions and purchase orders.

Enforce segregation of duties and only allow requesters of requisitions to access purchase order input screens and$/$or purchase order documents.