After several months, HRC's materials/crew manager is arrested for having $20,000 of materials delivered to his home but charged to the company. Identify the internal control weakness that allowed this theft to occur. A copy of the purchase order was not sent to the repair site.radio button unchecked The materials/crew manager's order should have been verified by the department head.radio button unchecked Purchase orders were not prepared on the basis of prenumbered requisition forms.radio button unchecked There was no way to independently verify that amounts charged by suppliers were for goods that had been delivered to authorized work sites.radio button unchecked