BIG Inc., seeks to enhance application controls and related business processes over purchasing quality goods from suppliers. To achieve this go$,$ an organization would typically implement all of the following except for the following:

Question $30$ options:

$1)$

Validity check of supplier number on all purchase orders

$2)$

Encrypt customer sales information

$3)$

Restrict access to the supplier master file

$4)$

Verify all changes to the supplier master file